I want to know your opinions of marine grade plywood decks compared to aluminum decks. I understand that even marine grade plywood can go bad and flimsy if not taken care of. If a boat with marine grade decks is kept covered when not in use and not taken out in the rain all the time, will they last 10yrs or so? One of the boats i have been looking at is a really widely known name brand (Alumacraft) for good built boats but they use marine grade plywood in the decks where some of the not so known brands use aluminum decks. What are your thoughts on marine grade plywood if it is covered and taken care of.