Awesome build. I really like your paint work and the deck is amazing. You are going to have to post a pic of it at night on the water with the lights on (no flash camera)!
I had forgotten that I commented earlier about it. If you boat is not in contact with the treated wood, then I wouldn't worry about it. If the bunks are made of treated wood and its only separated by the carpet on the bunks I would replace them at your earliest opportunity.
What size is this boat, I know its 18 feet long but is it a 52" or a 48" floor ?