As someone mentioned previously in passing. Workkamping is a viable alternative for you.
A little work for a free spot for your rig. There are plenty of opportunities for this with the national park service and state parks in warmer climates.
The last I knew the TONTO National Forest in Arizona was actively recruiting workkampers.
Volunteer 20 - 40 hours a week in exchange for a spot with electric, water and sewer. Plus the workkampers living areas tended to be located together giving a sense of community and a chance to socialize