I just finished cleaning out the inside of my boat with a power washer. I had painted it (aluminum) with a good "porch and floor" enamel well over 10 years ago and other than a little discoloration where leaves had sat in the rain water all Summer, there's been no peeling and very little sign of wear. My neighbor down the street put vinyl tile down on the floor of the trailer he uses to make and sell printed T-shirts at auto races. What do you intend to use the trailer for?
Tom G.