I have made 2 bench seats for my 12' fiberglass trihull. I used red oak which I later learned was a no no but anyways they have been coated with epoxy resin and 4oz cloth. They almost look transparent like the cloth is not there. I realize epoxy does not protect against UV so should I go natural and coat with helmsman spar indoor/outdoor urethane or paint them with the rest of the boat, which would be more protected in the long run?