Surfing is a surface water sport in which an individual, a surfer, uses a board to ride on the forward section, or face, of a moving wave of water, which usually carries the surfer towards the shore.

John Milne developed a three-wheeled version of a mountainboard in 1992 in his spare time during periods of very poor surf. It used a unique steering system to emulate surfing on land. It had three wheels and a skate-style deck with no bindings.

This sport requires endurance, core strength and balance, bike handling skills, and self-reliance. Advanced riders pursue both steep technical descents and high incline climbs. In the case of freeride, downhill, and dirt jumping, aerial maneuvers are performed off both natural features and specially constructed jumps and ramps.[2]