We are sorta in the same situation. The Bigfoot, Landmark, utility trailer, and GoDevil boat sit in my junkyard behind/beside the house. It's surrounded by a 6ft privacy fence so I don't have to look at from the back porch. Bigfoot has a fabric cover on it.
Wife has the old family farm about an hour away. 70 acres. A few houses around. Power and water available out on the highway. We're growing 30,000 pine trees on it for the agriculture tax exemption.
We considered building an RV "carport" on it to protect the Landmark and Bigfoot. But, I would assume both would be broken into and gutted of anything worth selling. Heck they would likely steal the carport too.
So, think about security first.