 The air board is a modified hydrofoil where the skier stands up.Hydrofoils date back the early 1900s, however they were not part of a recreational sport.While the first hydrofoil boat was created in 1906 by Italian inventor Enrico Forlanini, the first waterski hydrofoil was invented in the early 1960s by Walter Woodward, an aeronautical engineer, with two skis attached to a bi-wing hydrofoil.