[jwclbi]

BBH57, I recently did the deack on my 73 SF and used a product recomended by a comercial boat builder called penske board. It comes in a 4 x 8 sheet, variable thickness. It will not absorb water, very strong and is not much heavier than plywood. I chose it because while sealing screws into the deck with 5200 i find water can eventually get in. Hope this helps.