Don-
I saw a similar situation at little lake Elizabeth in Fremont one time in the mid 1970's.
This guy forgot to set the parking brake on his stick-shift Chevy El Camino after backing down the ramp.
After the Fire Department and tow truck got him back up on dry land, they figured out he was still boozed up continuing on from the night before.
Over the years, we've seen quite a few Hobie Cat sailors who were better been drinkers than sailors
As we all know-
Alcohol and water may mix in a cocktail glass, but on a boat they make for a deadly combination. Best save the sundowners till after the anchor is set.
Joe.