Re: Winter under a tarp
I too live in Southern Maine and have never shrinkwrapped. Waste of money! Tarp has always worked well and lasts about three years before it needs to be replaced. I then cut it up and use it for ground cover when bottom painting or to wrap the mast. Buy a heavy duty one. Hamilton sells them. The frame I built is similar to one I read about in Good Old Boat magazine about 5 years ago. I like it because when finished, it forms the shape of the boat so the tarp covers it exceptionally well. If I can find the issue, I'll let you know.
P.S. Where do you keep your boat when in the water? I keep mine in Falmouth Harbor.