RedactedNarrative: Vessel 1 Operator with Passenger seated behind as an observer was towing a person who was single ski slalom water skiing.  They were travelling from the area of the boat landing towards the big island.  Shortly after the Skier dropped one ski, he made a couple of cuts slalom skiing when a wave caught his ski and twisted his left leg, causing him to fall.  The Skier was transported by the vessel to the boat landing where he was transported by ambulance to the hospital.