I'm restoring the interior of a 17' Sunbird. I started with the upholstery. All of the wood on the back side of the cushions and the side rails was rotten. I replaced the wood with plastic. It took 2, 4x8 sheets of pvc board. Neat stuff easy to work with, won't rot, but it's expensive. $140.00 a sheet. Next I've pulled the carpet replaced some rotten wood around the ski locker. I've found a little bit of soft wood on the underside of the floor above the gas tank. I'm wanting to recarpet and go boating, am I making a mistake by ignoring this scenario?<br />The stringers appear to be okay.<br />Thanks