Tex, I am no red oak bow- jedi master, but the top one...part of the reason a board bow works is the milling of the wood enable the tensile (I think thats right) strength to work it's magic and not let the bow blow up....so you want to touch/ carve, sculpt/ etc the back (the part facing the target/animal) as little as possible. My suggestion would be to cruise around here (go to the how to and build along sections as well as an overall search for "oak bow" and "board bow"), look for "Ferrets" and "Gawges" links, those guys are great and will help tons. Good luck, take pictures so you can share your building adventures with us!
Semper Fi,
Mike