Ok this winter a friend of my runs a glass shop at a mariner wants to do my bulkheads over full height on my baja and maybe do the floor he said he can get what ever I want to use so for bulkheads should I stick with m plywood or balsa coring or the foamcoring and what about the floor its glass and plywood now. the floor has a couple soft spots under the rear seat which is gone to the boat has balsa in the hull. So what to use and where??? thanks srt