[SV Papillon]

I am a big fan of dolfinite. They have a white above water compound that would be fine. It never really gets hard and is easy to use. Does a good job keeping the water out and will be easy to remove next time. Waste marine used to sell this teflex stuff for SS fastners in aluminum but I'm not sure if they do anymore. It worked really well. Otherwise a food grade, IE non metal never seize(Bostik or others) from the hardware store will do the trick for the fastners.

Jake

You do want to bed the winch. when under load it will move and allow saltwater to get between and start corroding. A good flexible bedding compound will take care of this.