There’s a tragic tale described in boating magazine about a guy in the Florida Keys who wrapped his boat up tight to protect it from the wet summer season while he went out of town for six months. When he returned, he found a greenhouse of black mold and mushrooms growing inside his boat, making it a complete loss. The lesson? Yes, keeping water, snow, and ice out is important, but so is letting the cover breathe to prevent “locking-in” moisture. [links]