Weather is suppose to be high 60s low 70s this weekend. I really want to take my boat out and try my new drysuit, the only problem is the low temperature for Monday is going to be in the low 20s. I keep my boat in a metal shed and worry that it will freeze up if I take it out. I don't have any electricity to put a heat lamp in. Should i take my boat out? If I do what can I do to prevent, it from freezing?