Consider a carport---

carport.jpg
I had this put up to cover our 26' boat (which I sold about a month later) -it's 12'x31', this is just the basic model but its very nice, only paid $1965 for it I think- I did get a 10% break, have a friend who sells them, and the 10% down they ask for? That's the seller's commission, and he knocked that off. Had it 3-1/2 years now, still like new. You can fully enclose the things, you can get wall panels with/without doors & windows, front and back walls and doors, make them taller, shorter- for the money they're not a bad deal...