Sit-down hydrofoil

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Sky Ski Hydrofoil board jump
Sky Ski Hydrofoil board jump

The sit-down hydrofoil is a type of water ski that is used for flying over the water behind a towboat. The sit-down hydrofoil was invented by Mike Murphy and Bob Wooley[1]. The air board is a modified hydrofoil where the skier stands up. Manufacturers of sit-down hydrofoils include Air Chair and Sky Ski.

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In order to "float" upward the skier must lean back while maintaining balance from falling to either side. To go back down simply lean forward. The main board is made of a fiber glass material usually. At the bottom of the board is a long strut usually around 3 feet and is connected to a wing shaped piece which allows the rider to turn and go up and down.[2]


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