Join Date: Oct 2006
Location: on the boat - Chesapeake
Thanked 259 Times in 234 Posts
Rep Power: 11
I don't wrap my boat. I have an extension (not an enclosure, more like a auto convertible top that folds up to meet the dodger) to keep the cockpit a bit warmer than outside.
My Webasto diesel heater exhausts through the side of the boat just below the toe rail.
If you use a bulkhead heater and choose to wrap your boat you can get an insulation ring mounted in a wooden disk to carry the chimney through the plastic.