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Wakeboarding is a surface water sport which involves riding a wakeboard over the surface of a body of water. It was developed from a combination of water skiing, snow boarding and surfing techniques.

The rider is usually towed behind a motorboat; typically at speeds of 18–24 miles per hour depending on the water conditions, board size, rider's weight, and rider's comfort speed. But wakeboarding can also be performed with a variety of media including closed-course cables, winches, PWCs, and ATVs.

Source: wikipedia.com