Passenger went to the back of the boat to attempt to take a swim ladder out of the water.  As some point he slipped and fell in the water.  The boat operator stated that when this happened he brought the boat throttle to the neutral position and upon doing so the boat motor died.  The boat then began drifting away from the person in the water.  The victim then entered the water in an apparent attempt to rescue the first party.  Three more people entered the water in succession as the boat continued to drift away.  Ultimately all of the parties except the victim were rescued by another passing pontoon boat.
Stone Lake