Surfing

Full-timeline processing preserves the order of the ride, but distance, spray, camera motion, occlusion and missing board or wave landmarks can cause the beta to miss or misidentify a manoeuvre. A single shore camera cannot establish true 3D turn angle, rail angle, speed or an official WSL score.

• keep the rider, board and breaking section visible
• replay each event timestamp against the video
• use timestamped feedback to correct a missed turn or wrong wave position

• treating a projected 2D candidate as a true 3D turn
• assuming every attempted frame produced a correct rider and board track
• using the report as an official judging result

• review one complete wave with a coach
• film the next wave from a stable similar viewpoint

A responsive base preserves options as wave speed, pitch and board angle change.

• soft knees
• quiet head
• pressure distributed through both feet

• upright rigid stance
• excessive rear-foot loading
• feet too narrow for control

• land-based stance transitions
• trim-to-compression repetitions

The timing between compression and extension contributes to speed generation and control through turns.

• compress before loading
• extend through the exit
• avoid bouncing without wave purpose

• late compression
• constant crouch
• extension before rail engagement

• low-high-low timing rehearsal
• marked-phase video review

Coordinated rotation helps load and release the rail while preserving projection.

• look through the intended arc
• lead without throwing
• let hips follow the line

• shoulder-only rotation
• counter-rotation
• late head turn

• target-point turn rehearsal
• pause-frame sequencing review

Too little engagement produces a flat pivot; too much for the available speed can stall or catch the rail.

• set the rail before maximum pressure
• match lean to speed
• release progressively

• flat-board pivot
• abrupt over-lean
• rail release before projection

• drawn-out bottom turns
• graduated-arc practice

A mechanically tidy movement can still be ineffective if initiated in the wrong part of the wave.

• identify the next power source
• preserve an exit line
• adjust arc to section speed

• turn initiated too far onto the shoulder
• high line without exit
• late response to closing section

• wave-map annotation
• decision-point freeze frames

Excess movement costs time and can compromise the first line decision.

• hands close to lower ribs
• hips clear
• feet land quietly under the body

• front knee plant
• feet land sequentially too slowly
• landing upright

• low-ceiling pop-ups
• targeted foot-placement repetitions

It establishes the angle, speed and timing available for the next manoeuvre.

• compress into the trough
• set the rail
• project eyes and chest toward the target

• turn begins too early
• rear-foot pivot
• extension before the rail is set

• delayed bottom-turn entries
• single-target projection practice

The manoeuvre recovers wave energy rather than simply changing direction.

• commit gaze back to the source
• maintain pressure through the middle of the arc
• plan the rebound

• open arc misses the source
• upper body falls inside
• no recovery line

• figure-eight visualisation
• arc and rebound annotation