There is really no theft proof method. I've seen equipment, four wheelers and UTVs stolen from inside barns, Connex boxes, and behind various locked gates with locks cut, gates torn off hinges. Investigators have told me that many of these type thefts are often done by larger theft rings operating in several states. Certainly you have your local snatch and grab crowd, but it often takes an out of state fencing operation to sell UTVs and Buggies. Bottom line, if you want to prevent theft, don't leave it at your camp.