Just ripped most of the floors out and have noticed that the stringers have no waterproofing whatso ever. The only fiberglass is in the bilge and the step down in the cabin. The stringers are not attached in any way to the hull. This is a 1971 boat and the stringers have lasted this long. My question is this. Is it really necessary to do all of this work laminating to the hull and waterproofing? I am thinking of useing my extra 2x6 treated deck lumber that has been sitting around for a couple of years. Any thoughts would be greatly appreciated.