Roller Freestyle Tricks and Difficulty: The Trick Reference
Grinds, spins, grabs, switch-ups, and how judges read the difficulty delta
Last updated: June 5, 2026
Roller freestyle (aggressive inline) tricks organize into five families: grinds (the locked-onto-an-obstacle vocabulary that defines the sport), spins (180 through 1080, true-spin vs neg-spin), grabs (mid-air board-grab variations on the boot or skate), switch-ups (chained grinds without leaving the rail), and obstacle-relative tricks (the same grind reads harder on a kink-rail than on a flat ledge). Under the World Skate Roller Freestyle Rulebook 2026, judges weigh difficulty as one of multiple criteria alongside execution, variety, style/flow, and amplitude/risk — there is no fixed difficulty table or coefficient. This guide is the technique-and-trick reference. For how those criteria turn into a 0.01–99.99 score, see the scoring guide. For the term definitions, see the glossary.
Overview: How Trick Families Map to the Difficulty Read
Every roller freestyle trick belongs to one of five families. The family tells you roughly how the judge will weigh its difficulty, and within each family the read climbs along predictable axes: which point of the boot or chassis locks (H-block vs soul plate), how much rotation enters or exits the grind, what obstacle the trick is performed on, what stance the rider is in, and how the trick chains with what comes before and after it.
The five families.
- Grinds. The locked-onto-an-obstacle vocabulary that defines the sport — royale, soyale, fishbrain, mizou, makio, savannah, unity, and their topside, switch, and alley-oop variants. Most of the difficulty read in Park and Street runs is grind difficulty.
- Spins. Mid-air rotation, notated 180 / 270 / 360 / 540 / 720 / 900 / 1080 by degree count. The rotation can enter the grind (270-in), exit it (360-out), or stand alone over a gap or coping.
- Grabs. Hand-to-boot or hand-to-skate catches in mid-air over coping, gaps, or transfers. The vocabulary borrows from snowboarding (mute, indy, stalefish) and the skate side, with inline-specific variants on the soul plate.
- Switch-ups. Chained grinds without leaving the obstacle — royale to fishbrain to topside soyale, performed on one continuous rail. The chain compounds difficulty.
- Obstacle-relative. The same trick reads different difficulty on different obstacles. A topside soyale on a flat ledge is a baseline; on a kink-rail it is a top-band trick.
Critical point: no difficulty table. Like skateboarding, roller freestyle has no fixed difficulty multiplier or coefficient. The World Skate Roller Freestyle Rulebook 2026 lists difficulty as one criterion alongside execution, variety, style/flow, amplitude, and consistency. Judges weigh them together into a single holistic score (or, in JudgeMate's weighted mode, sub-scores per criterion that combine via fixed weights). This guide is a technique reference for the difficulty input — not the whole scoring math. The math is in the scoring guide.
Grinds: The Locked Vocabulary
Grinds are the sport's signature vocabulary. The H-block (the plastic block between the second and third wheels) and the soul plate (the outer plate on the boot's side) are the primary grinding surfaces. Which surface locks, which leg carries the weight, and where the non-locked leg goes define each grind.
The base grinds (two-foot)
- Royale. Front foot on H-block, back foot on soul plate. The foundational two-foot grind — every other named grind references royale somewhere in its lineage. A clean royale on a long, even rail is a low-difficulty reference; the same trick on a kinked or sloped rail rises in difficulty quickly.
- Soyale. The mirror of royale: front foot on soul plate, back foot on H-block. The opposite weight distribution makes it read slightly harder than royale on the same obstacle — the back-truck balance demand is the difficulty marker.
- Unity. Both feet on H-block with the back leg crossed behind the front leg, removing the natural triangle stance. Reads as harder than royale and soyale because the crossed-leg posture fights the body's natural balance.
One-foot grinds
- Makio. Back foot on H-block, front leg extended away from the obstacle without crossing or angling. The simplest one-foot grind and the base for the more technical one-foot variants.
- Savannah. Back foot on H-block with the front leg crossed in front of the grinding leg, sweeping over the obstacle. Reads as harder than makio because the crossed-leg shift moves the center of gravity.
- Fishbrain. Back foot on H-block with the front leg extended out to the side and the boot turned sideways, ankle hanging below the rail. The extended front leg gives the trick its silhouette and shifts the weight rearward.
- Mizou. Front foot on soul plate with the back leg trailing or extended behind. Topside mizou — landing above the rail rather than locking into the soul-plate side — is the higher-difficulty variant judges look for at World Cup level.
Variant modifiers (multiply difficulty)
- Topside (= AO / alley-oop). The grind locks above the rail rather than against the side. The boot sits on top, the wheels hang to one side. Topside variants of royale, soyale, fishbrain, mizou, makio, savannah, and unity all read as one clear step harder than their standard versions. Lock-in is narrower, balance harder.
- Switch. The trick is performed with the rider's non-natural stance leading. Reads as another clear step up — every element (entry, lock, exit) is performed in the non-natural muscle memory.
- Alley-oop entry. The rider approaches the rail one direction and the grind reverses orientation mid-lock. Often combined with topside (topside alley-oop royale = the boot above the rail with reverse orientation).
- Negative. The opposite-direction equivalent of standard. Switch negative grinds are top-band difficulty.
For the full term definitions and obstacle vocabulary, see the glossary.
Spins: 180 Through 1080, True-Spin and Neg-Spin
Spins are mid-air rotations measured in degrees. They can stand alone (a 540 over a coping with no grind), enter a grind (270-in royale = a 270-degree spin into a royale), or exit a grind (360-out = a 360-degree spin off the rail).
Standard rotation ladder
- 180. Half rotation. Standard, low-to-medium difficulty alone. Commonly paired with a grind entry or exit for variety.
- 270. Three-quarter rotation. Common as a grind entry (270-in to royale, 270-in to topside soyale). The 270 is the workhorse spin of technical inline.
- 360. Full rotation. Medium difficulty alone over a gap or coping; medium-high when used as a grind in/out.
- 540. One-and-a-half rotations. The threshold into high-difficulty territory, especially over coping or as a grab variant.
- 720. Two full rotations. High difficulty in any context. A 720 misty grab over a Park bowl or megaramp gap is a top-band trick.
- 900. Two-and-a-half rotations. Top of the difficulty band. Landed in competition by a small group of riders globally. Used in Vert and Big Air primarily.
- 1080. Three rotations. Progression-tier. Very rare in contest runs; appears as a Big Air banger when conditions allow.
True-spin vs neg-spin
This is one of the most important difficulty markers and one of the least understood by casual viewers.
True-spin. The rotation goes toward the rider's natural direction — the same way the rider would instinctively spin if asked to turn on flat ground. A true-spin 360 follows the body's grooved muscle memory.
Neg-spin. The rotation goes the opposite direction. A neg-spin 360 fights the rider's instinct. Same rotation count, very different difficulty.
The difficulty delta: neg-spin reads as one clear step harder than true-spin at the same rotation count. A neg-spin 360 reads harder than a true-spin 540 to many judges — even though the 540 has more rotation — because the neg-spin fights the body's natural turn.
Combined modifiers. A trick can be neg-spin AND switch AND topside in a grind. A neg-spin switch topside soyale is high-band difficulty. Judges read each modifier as additive in the difficulty input.
Spin notation in grinds
Grind notation chains the entry and exit spins: "270-in to royale to 270-out" describes a 270-degree spin into a royale followed by a 270-degree spin out. "360-in to topside soyale to switch out" describes a 360 entry into a topside soyale, exited in switch stance. Judges read the in-spin, the grind, and the out-spin as three difficulty inputs combined.
Grabs: Hand-to-Boot Catches in the Air
Grabs are hand catches on the boot or skate mid-air. Roller freestyle grabs borrow heavily from snowboarding and the inline vocabulary maps closely.
Standard grabs
- Mute. Front hand grabs the front of the opposite-side boot (cross-body). Style staple.
- Indy. Trailing hand grabs the toe side between the boots. Common over coping airs.
- Stalefish. Trailing hand grabs the heel side behind the back leg. Reads as a style flourish.
- Method. Front hand grabs the heel side on the front boot with the back arched. The signature grab of high-amplitude park airs.
- Liu Kang. Both legs split mid-air with one leg straight and one leg bent. Borrowed from skate and BMX vocabulary; the leg split is the marker.
- Mizou-grab. A specifically inline grab where the rider grabs the soul plate of the opposite skate in flight. Lock-in is harder than a boot grab.
- Fishbrain-grab. Hand-to-H-block of the opposite skate. Rare and difficult.
Difficulty reads
Grabs alone do not anchor the difficulty band. A grab gets its difficulty from what it is combined with: rotation count, amplitude, and the context (Park gap vs Vert coping). A method grab over a flat quarterpipe wall reads as a baseline; the same method on a megaramp gap with a 720 reads as a top-band trick.
This is similar to skateboarding park grabs, where the grab itself is style vocabulary and the difficulty input comes from rotation + amplitude. The key inline-specific addition: grabs on the soul plate or H-block (instead of the boot) read as harder because the lock-in surface is smaller and the hand has to reach further.
Switch-Ups: Chained Grinds Without Leaving the Rail
A switch-up is a change from one grind to another mid-rail without coming off the obstacle. Switch-ups compound difficulty: a royale-to-fishbrain switch-up on a long rail scores as one chained trick that combines the difficulty of both grinds, not two separate tricks scored separately.
Basic switch-up examples
- Royale → fishbrain (low-to-medium chain)
- Royale → soyale (medium chain — the weight shifts from front-foot-on-H-block to back-foot-on-H-block mid-rail)
- Topside royale → topside soyale (high chain — both are topside, weight shifts at the locked-above-rail position)
- Royale → 270-out (medium — the switch is from grind to mid-air exit)
Advanced switch-up examples
- Topside soyale → topside mizou → topside royale (top-band chain — three topside grinds chained, weight redistributed each switch)
- Switch fishbrain → switch unity (top-band — both switch, both technical grinds, posture shift mid-rail)
- Royale → 270 mid-rail → fishbrain (top-band — the mid-rail spin between grinds adds rotation difficulty)
How judges read switch-up difficulty
The difficulty input compounds, but not linearly. A two-grind switch-up does not read as 2× a single grind. The compound difficulty depends on:
- Grind technicality. Two topside grinds chained reads harder than two standard grinds chained.
- Surface change. Switching from H-block to soul plate mid-rail reads harder than two H-block grinds chained.
- Stance change. Switching from regular to switch stance mid-rail reads as a top-band marker.
- Mid-rail rotation. A 270 between two grinds adds rotation difficulty to the chain.
Multiple switch-ups in one rail are a hallmark of advanced street riders. World Cup street finals routinely feature three- and four-element switch-up chains.
Obstacle-Relative Difficulty: Same Trick, Different Read
The same trick reads different difficulty on different obstacles. This is the part casual viewers miss most often.
Rail types and their difficulty input
- Flat rail / flat bar. The baseline. A topside soyale on a flat bar reads as a baseline topside soyale.
- Kink-rail. A rail with one or more angle changes (the bend in the rail). The kink demands the rider redistribute weight at the angle change without losing the grind. A topside soyale on a kink-rail reads as a clear difficulty step above the same trick on a flat bar.
- Down-rail / handrail. A rail descending a stair set. The slope adds speed and consequence. A clean grind down a long handrail is a high-band trick because the bail consequence rises with rail length and angle.
- Up-rail / hubba ledge. A ledge or rail ascending. Less common in elite contests but appears at FISE-style street courses. Difficulty climbs because the rider has to maintain speed against the rise.
Other obstacle types
- Coping. The lip of a quarterpipe or bowl. Coping tricks read based on amplitude above the lip. An invert or handplant on the coping reads as a high-band Park trick.
- Spine. A back-to-back transition between two ramps. Tricks over a spine combine amplitude and the directional change required.
- Gap. Open space between two obstacles. Distance is the difficulty marker — a 10-foot gap reads baseline, a 20-foot gap reads top-band. Tricks over a gap also factor in rotation and grab.
- Wallride. Riding the wheels along a vertical wall section. Length and height are difficulty markers; wallride-to-grind transfers read as chained tricks.
- Hubba ledge. A ledge with a sloped side, often along a stair set. The sloped angle changes how grinds lock — a tailslide on a hubba reads differently from one on a flat ledge.
The difficulty input table
| Trick | Obstacle | Difficulty read |
|---|---|---|
| Royale | Flat bar | Baseline |
| Royale | Kink-rail | One step above baseline |
| Royale | Handrail (down-rail) | Two steps above baseline |
| Topside royale | Flat bar | One step above standard royale |
| Topside royale | Kink-rail | Top-band |
| Switch topside royale | Kink-rail | Top of the difficulty band |
| 540 misty grab | Flat quarter | Baseline 540 |
| 540 misty grab | Megaramp gap | Top-band 540 |
| Wallride to grind transfer | Plaza wall | One step above standalone wallride |
This is illustrative, not a fixed table. The point is that obstacle context shifts difficulty by clear steps.
Switch Stance: The Single Biggest Difficulty Modifier
Stance is the single biggest difficulty modifier in roller freestyle, mirroring skateboarding. There are four stance variations:
- Regular. The rider's natural footing — the foot they instinctively push with leading.
- Fakie. Riding backward with the feet in regular position.
- Negative (neg). The rotation direction opposite to natural (covered in the spins section).
- Switch. Riding and popping with the non-natural foot leading. The rider's non-dominant configuration applied to every element of the trick.
Why switch reads harder
A rider has spent years grooving regular-stance muscle memory. A switch fishbrain demands reproducing that precision with the body's non-dominant configuration. To an untrained eye a switch trick looks identical to a regular one. To the panel, switch is a clear difficulty step up because every element — the pop, the lock, the balance through the grind, the exit — has to happen against the body's natural rhythm.
The difficulty ladder (rough, per the same base trick)
Regular → fakie → nollie-equivalent (less common in inline than skate) → switch.
Switch is generally the hardest stance for the same trick on the same obstacle. A switch topside soyale on a kink-rail is a high-band trick because every modifier stacks — switch + topside + kink-rail compound. World Cup street finalists routinely feature switch-stance tricks in their lines, and judges read them as a clear difficulty input.
How Judges Weigh Difficulty Without a Difficulty Table
This is the part most newcomers get wrong. Roller freestyle has no difficulty table, no fixed multiplier, and no published coefficient — just like skateboarding. The World Skate Roller Freestyle Rulebook 2026 lists difficulty as one criterion alongside several others: difficulty, height/amplitude, flow, fluidity, originality/creativity, style, consistency, variety, landings, control, use of park, execution, and progression. The list is qualitative; the rulebook deliberately stops short of assigning weights.
Under the federation's default holistic scorecard, judges weigh all those criteria simultaneously and produce one number between 0.01 and 99.99 per run. Under JudgeMate's editorial weighted card, judges score five sub-criteria (Technical Difficulty 25–30%, Execution 25–30%, Variety 15–20%, Style & Flow 15–20%, Amplitude & Risk 10–15%) on a 0–10 scale, and the platform combines via fixed weights into a 0–100 panel total.
What that means for trick choice
- A clean topside royale with great flow can outscore a sloppily-landed switch fishbrain. Difficulty does not win on its own; execution and flow are weighed against it.
- Doing the same grind family three times (three royale variations in one run) reads negatively under variety, even if all three are technically hard.
- A high-difficulty trick barely rolled away from — a wobble, a chattered slow-out, a partial bail — is penalized on execution, which drags the overall read.
- Using only one obstacle and ignoring the rest of the course caps the use-of-park / use-of-course read no matter how hard the tricks are.
The panel's signal
A five-judge panel using arithmetic mean (the federation default) usually converges within a 5–10 point band on the same rider when calibration has been done. That convergence is the practical signal that difficulty is being weighed consistently rather than guessed. When a panel scatters by 15+ points, the head judge usually calls a between-rider conference to recalibrate.
For the full panel protocol, see the judge guide. For the scoring math and World Ranking points system, see the scoring guide. For the criterion-by-criterion difficulty read, see the scoring guide's criteria section.
Progression and NBD: Where the Difficulty Ceiling Moves
NBD stands for "Never Been Done" — a trick or trick-on-obstacle combination landed for the first time. It is the informal benchmark the roller freestyle community uses to mark the moving ceiling of difficulty, exactly the same usage as in skateboarding.
An NBD is not a separate scoring category. There is no bonus field on a judge's screen labeled "first ever." But an NBD is, almost by definition, at the very top of the difficulty read at the moment it lands. NBDs typically show up in:
- World Cup street finals (a new switch topside chain on a kink-rail nobody has done before)
- Vert and Big Air contests (a 1080 grab that has not been competition-landed before)
- Video parts and contests (the highest progression-density format, where filming windows allow multiple attempts at a banger trick)
Related terms
- NBD. Never Been Done.
- ABD. Already Been Done — the counter-term, used when a trick claimed as NBD turns out to have been landed before.
- Banger. The hardest, highest-impact trick of a run or video part, often saved for the end.
- Switch progression. Established tricks redone in switch stance, becoming the new difficulty bar.
How progression has moved roller freestyle
- Topside variants of standard grinds (the topside royale, the topside soyale, the topside fishbrain) became the new baseline at World Cup level over the late 2010s.
- Switch stance applied to topside variants — the switch topside soyale, the switch topside fishbrain — became the World Cup street finals norm by the early 2020s.
- Mid-rail switch-ups of three or four topside grinds on a single long kink-rail are the current top-band street vocabulary.
- High-rotation Vert continues to chase the 1080 ceiling that has been crossed by a small group of riders globally.
In judging terms, progression does not change the rules. The criteria stay constant; the tricks that sit at the high end keep getting harder. Olympic and World Skate best-trick-style formats — which roller freestyle has not adopted at the run-scoring level but which Big Air formats echo — are deliberately structured to reward exactly this kind of risk-taking.
For how attempts and the federation's run-scoring format apply to progression-level tricks, see the scoring guide. For the formats themselves — Park, Street, Vert, Big Air — see the formats guide.
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Frequently Asked Questions
Primary Sources
- World Skate — Roller Freestyle Rulebook 2026 — World Skate
- World Skate — Understanding Roller Freestyle Contest Categories — World Skate
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