Obviously, if you keep your boat in the water, you should apply bottom paint. Although, if you trailer your boat, you can get away without bottom paint. Although tailoring is inconvenient. If I were to trailer, I would probably camp-sail where I keep the boat in the water for 2 or 3 days at a time while I'm camping with easy access to the boat. Is there any words of wisdom as to when to apply bottom paint? Would keeping the boat in the water for 2 or 3 days at a time necessitate bottom paint? I would trailer it to both salt and fresh water.I haven't bought a boat yet. I'm just planning ahead.