The world's first AI surfskate coach.

How many pump cycles you complete per second. The working flat-ground pump lives around one cycle a second - much slower is carving, much faster is ankle flutter going nowhere.

How evenly your pump cycles repeat. A metronome rhythm sends the board one clean message; a rhythm that stutters is speed leaking out between cycles.

Time from landing on the board to your first real pump cycle. The mount is a beat in the music, not a pause - the best riders resume rhythm within a second.

How much your arms travel through each pump cycle, relative to your torso. The arms are the flywheel of the pump - quiet arms usually mean the chain starts and ends at the knees.

How connected your upper and lower body move - one wave traveling through the whole chain instead of segments working alone. This grades the connection, not which end starts it.

How far your hips travel vertically through each pump cycle, in torso-lengths - the compression-extension engine, read from the side.

Stationary on grass or carpet: rock the board rail to rail using only ankle pressure - heels down, toes down. This is the bottom link of the pump chain; groove it before you add anything else.

Rolling slowly, add one body segment at a time: ankles only, then knees, then hips, then shoulders. Each layer only gets added once the one below feels automatic.

From a standstill, generate all speed by pumping - feet never touch the ground. Kick-pushing is the number one habit to break on a surfskate.

Pump continuous circles one direction, then the other, then link them into figure-eights, then straighten into a pump line. The classic progression from turning to true flat-ground speed.