Re: butyl in a wet environment
Hit a rock. The bracket that secures the lower part of the rudder was backed with smallish washers, which pulled through the transom.
Planning a temp repair that will use a plate on each side of the transom, transferring the force well outside the damaged area.
I have some underwater cure epoxy putty, but I want to limit its application to the damaged area of the transom. Since the plate will be much larger, my thought was to use buttyl in areas where the plate will contact the undamaged glass, making for an easier final repair.