I'm looking for some recommendations for what to use for making new engine hatches f/ my BHM. We made the cabin a bit longer than original and the guy before me had a split house, so the current set-up leaves a lot to be desired. We just pulled the engine f/ replacement, so now seems like a good time to reconfigure the hatches f/ better access. The current plywood hatches are heavier than what I care to wrestle w/ by the time there is some sound insulation underneath. I'm thinking the hatches will be about 3 by 5.5 feet each.