I have a Duel axel trailer for my 19ft skeeter zx190c and the plywood that goes right behind the wheels that is covered with carpet is completely rotted out and basically falling off! I need to replace them which is not a problem but does anyone have any ideas on a material I can use that would last longer then marine grade plywood like maybe some type of synthetic wood or plastic it's 9"x62" inches on each side? Thanks!