RedactedNarrative: Operator was towing a waterskier on Lake Wisconsin near Sunset Bay.  Operator1 had two passengers in the boat, who were both facing backwards towards skier.  As Operator1 was traveling along the shore, he struck a tree that was hanging over the water.  Operator1 had been consuming alcoholic beverages and was arrested for causing injury by the intoxicated operation of a motorboat.  Operator injured by striking tree, passengers injured as a result of collision and being thrown in the vessel.  All remained in the vessel.