I reinforced my transom the other day with an older gentleman in the church, and had a great time with him. But, I have one question...we put down treated plywood on both the inside of the boat that outside of the transom. Being it is treated plywood, would I still need to seal that wood on the outside under the motor with some kind of a varnish. I have already made it water tight around the edges, and in the bolt holes, but wondering if the wood itself needs some kind of a treatment.