Several of my friends use what they call the security system that pays you back. They put in a Septic system near their entrance and a utility pole. Then they find them a younger reliable family that will put their own mobile home on that location. In trade for use of the land they perform some of the duties of a care taker alot cheaper than if you hired them out. It is often a good thing to let them use your equipment to keep up their place as well. These People tend to act pretty well cause they do not want lose the deal they have in place. Also the overhead of having to move their mobile home if someone was to upset you tends to make them keep their friends in check also.