If you look through the very old archives, there was once a discussion on this board. It was rather heated (pun intended..) between George Roberts, Chris Kulzycki, and some others. It was on post cure only, heating to about 140 degrees. If I recall, epoxy beginns to break down at some elevated temperature close to that, and many thought that it is unsafe to post cure at temperatures close to that at which your brand begins to break down. Lots of folks use a tent of some type, with a few light bulbs to help the cure. I have simply turned the boat over and stuck a small heater underneath so that warm air gathers inside through the cockpit, but this post cure is different. My own feeling is that the boat will reach full cure in a few weeks anyway, without external help. I'd suggest checking with your epoxy manufacturer.