Hey, orthobiz here and I lots of little things to say.
First, ScooterD's arrangement reminds me of a conversation I had with John Paterek in the 80's about his Porsche America roadster. He had a crawl space in his NJ home with access from the outside of the house. He put a piece of iron on the floor of the space and it didn't rust. He then put his car in there (before it was worth 7 figures and was just about uninsurable) with good results.
Second, I used the giant plastic bag from Michigan back in the 80's. I stored my 1976 for about four years with good effect. Never treated the gas or anything, put a new battery in and it started up easily. But I agree, don't put it away wet! And this was a primitive bag: just a really big plastic bag with chip clips for the end. Now it looks much better with a zipper and everything.
Third, I used the fan driven bag last winter and loved it. Here it is in time lapse mode:
Storage BagPaul