So my Lund aluminum boat needs a new transom. Not a real big deal, it’s a wide open tiller boat & I think it’ll be a pretty straight forward process. Since it’s aluminum I plan on using aluminum buck rivets since that how the boat is built. My question is the boat has a nice automotive paint on the transom & I'm not sure if that paint needs to be taken off for the rivets to be waterproof? If I used stainless bolts instead of rivets, would the paint be a barrier between he stainless & aluminum to prevent galvanic corrosion?
I appreciate any help.
-Grant