I can see a couple of problems with your business plan.

1. Isn't this the off season up there? I don't know too many people from down south here heading to Ely in November. It won't be long before the water up there turns hard.

2. Repairing boats this time of year may be a better option up there.

Good fortune to whatever you decide.

And yes, my unheated boat barn does have carpet and TV and you are welcome to stay there, in or under my boat. lol