If you want to boon dock for free then some Walmarts, casinos, Flying J, rest stops, ramps off major interstates are available for pulling over. We have never pulled over to camp on private land although it looks tempting. Finding an owner to request permission to pull over could be a challenge given the miles and miles of ranch land here in the SW and not a house in sight. State maps usually point out public and private lands but not every public location encourages camping because of the problem of squatting. A growing issue is the large number of homeless people and families who have moved their campers onto public lands and in some cases camp in vast private lands. After a particularly long trip we pulled over in Navajo County and got a knock on our door from the Tribal Police telling us to move on. He directed us to a beautiful park that was empty. We boon docked there, free, for days. Given this, we have chosen not to venture off the beaten track and be awakened in the middle of the night by the state police. I have camped enough in the SW to have gotten used to Border Patrol agents regularly driving through every campground I have been in and also seeing them or State Police knock on camper doors parked on the side of roads. So, we tend to stick to State/ Forest Service/BLM/Corp of Engineer campgrounds. We have also stumbled on wonderful town, county and regional parks and happily boon dock there. Those campgrounds vary in term of cost, amenities, location, size, etc. but for the most part I have found them to be in stunning locations, some have hosts, and the amenities are fine if rudimentary in some cases. We have found we can boon dock about five days with careful use of electricity, propane and water. Happy Holidays and Happy Camping!