We are lucky that where we live we are able to sail pretty much year round, however our week of winter is coming soon. The forecast lows are high teens and low 20’s for a week or so but the highs are below freezing only for a couple of days. I haven’t winterized the boat since we are still using it. My thought was to just leave the heater on for that week. I am a little worried about the stern shower plumbing though. Should I disconnect it? Any other thing I should be worried about? Thanks.