Originally Posted by sailingdog
BTW, if you're really trying for passive solar, the way to go is to get the black plastic landscaping material, and put that down on the cabin top, and then tent the boat in the clear dropcloth material. The black plastic converts more of the visible light to heat, and helps transfer the heat to the boat.
What about just having a very dirty deck LOL? Hmmm, an excuse to avoid washing the boat all autumn?