Morgan County Fairgrounds has winter storage. (Martinsville) It's $200 for the first 20 feet and $5 per foot after that. I know it's filling up quick. 765-342-9905. I hope I didn't give away your secret John.
Nope. I'm at Lawrence county fairgrounds. Indoors, under lock and key in one of the commercial buildings. Grounds are watched pretty closely by the caretaker who lives on sight. 8$/foot including trailer tongue. My 24' noat on it's 32' trailer costs me $256 for the winter (Late October till late March I think).
I think generally fairgrounds are well kept secrets for this sort of thing