IWWF

Skis. Competitors use event-specific skis.

Slalom course. The official slalom course runs 259 metres (850 ft) from entry gate to exit gate, with the two lines of boat guides spaced roughly 23.5 metres (77 ft) apart.

Competitors ("skiers") are entered individually and are typically grouped into age and skill divisions, with separate men's and women's classifications and boat-speed/rope-length or ramp-speed standards for each. A sanctioned tournament requires a...

Slalom. The skier makes a series of passes through the course, starting at a set boat speed with the full 18.25 m rope.

Slalom scoring. , a fall on the second buoy of a pass at a given rope length yields a score reflecting the buoy count reached plus any partial-buoy value for a wake crossing beyond the last completed buoy).

Jump violations. A jump is disallowed (scored as a "no jump" or foul) if the skier does not maintain control through the landing and ride-away, deviates outside the approved ramp approach lane in a manner deemed unsafe or advantageous, or if equip...

All competitors are required to wear a properly fitted buoyancy vest while competing, and a helmet is mandatory in the Jump event given the speeds involved and the risk of hard falls on landing. A boat observer/spotter and the boat driver are resp...