What about volunteering for a site in special places you want to visit? That's what we did and really enjoyed it in the national parks and state parks. Doesn't pay but gives you a free site (which isn't why we did it though). You do have to make a 1-3m commitment but then you have plenty of time to explore the area. This could entail not only camp hosting but also other things in the campground. We did some lighthouse tours for Oregon and Michigan's parks. We also did an Oregon fish hatchery and a one-week stint on a houseboat on Lake Powell cleaning the shoreline a couple hours a day & fun the rest of the day. We also ranch-sat on a 10,000 acre ranch in Oregon just letting the cowboys in the gate.
Full-timed for 16 Years . . .
Traveled 8 yr in a 2004 Newmar Dutch Star 40' Diesel
& 8 yr in a 33' Travel Supreme 5th wheel