Re: Kicker bracket motor mount
You are going to crack the "seal" that the epoxy would be used to create when you lock the engine down and the raised lines across the clamp bracket (designed to keep the engine from coming off the mounting) dig into it. It probably won't be that big of a deal especially if the bracket doesn't get regularly soaked from follow on waves when you come off plane.
I would use linseed oil and some turpentine and soak the plywood in it before installation. I have soaked plywood like that many times and never had a delamination problem. HD has both. I use the two as I can get a goodly amount of oil as compared to the prepared treatments for household decks. The turpentine is a vehicle to thin the oil and allow it to better penetrate into the wood. Then if you choose, a coat of oil based paint to make it look pretty and you have good looks and internal protection.
HTH,
Mark
Ayuh,... Ditto Mark's ideas,....
Epoxy coated wood, won't allow the motor's mount to bite into the wood either...
Mark's formula for wood treatment is exactly what I did to my transom, 15 or so years ago,...
No signs of rot in it, Yet...