That is why we need NOT worry about a very few using antifreeze to refinish a boat. When 100's of thousands won't give up their motors for the environment. 1-2-3 hundred thousand wrongs don't make a right either. The antifreeze of "one" is the lesser of the "evils" PS- thanks for the welcome...
My point is also simple--Lotsa boats = lotsa wax---Lotsa boats = lotsa oil in exhaust---One boat done with antifreeze = little antifreeze. :) :) my 2 cents
If there is concern about antifreeze in the lake--what about your boat wax or polish ? And that oil in the exhaust ??--Glycol in small amounts will do about the same "damage" as your polish & waxes.