Re: Arkansas traveler
kind of sounds to me from your first post like you want a way of joining the butt ends of the new wooden rail pieces. (I could use some pics too.) Assuming that's what you might mean, epoxy the end pieces to bond and water seal, and locate rail attaching screws fairly close to the ends, particularly if at a point where there is any flair. Scarf joints would be better for joining, but sounds like you have them cut and ready. For attaching along the length of the hull, if that's the question, I would look for access to drill from inside, and then attach with stainless screws, with 5200 between the wood and hull surfaces.