Without giving up Boondocking Sites outside of National Parks and popular areas where you need to set the trailer at a RV Park... there are lots of Off the Grid Boondocking sites with some effort of... finding them.
National Parks have borders that end. They were designed to 'protect these gems from... crowds?' by making them big enough, but not so big that the NPS would have to build more roads to get in and out.
Today the road systems and facilities within the Parks cannot handle the traffic or crowds. Why not find a campsite outside the Park and Dry Camp for free?
Been there. Done that. That is why I am OLDer and WISER, today.
Arches in Utah comes to mind. A wide open area exists to the north of Arches Monument and north of crowded Moab, Utah at the Yellow Cat exit 193 or so is a 'rough example'. You can see the Arches to the south once off Highway 70.
You can also collect AGATES right outside your trailer as Yellow Cat has plenty there and further EAST to the Green River. The radioactivity there will kill any virus you carried along with you... maybe? The ENTIRE Rocky Mountain area has background Radioactivity. You will leave just as healthy as you arrived. Maybe even better with less grey and more blond hair from the Sun.
You can go East of Moab, Utah into the Manti La Sale National Forest on the west or east side (Monticello side of the NF) and find adequate dry camping in the forest and open spaces. Nancy and I camped on the West and East sides. Nice. The west side may have more flies... and seasonal. If you are there... probably fly season.
This is just ONE EXAMPLE. Major and Minor Parks and Monuments have these Off the Grid Boondocking sites that are often neglected... as there are no flushing toilets or golf courses (just making some fun) with rented golf carts to the club house to rough it up at the bar. Your Airstream has cleaner facilities and a refrigerator... you know.
The WEST is full of these easy to camp... but more difficult to discover sites. They are easy to see once you catch on to what to look for... like a ROAD, well used into the Junipers.
Now this is not for everyone. Maybe 20% of RV / Trailer owners want to take the plunge.
It helps if you can BACK OUT your trailer as many of these places are not drive in and out pampered sites. This is real camping in a Mansion on Wheels.
Tourists drive into town and stay at a motel or lodge for $150 a day. Free breakfast, too?
You have your own on wheels. You just need some Real Estate to camp. We have never had a problem with our trailer parked in these locations when not present. Secure the hitch, anyway. Your local street has more potential of.. loss. People in the Boondocks... pack a 38 or 45... kind of camping. Makes criminals... think twice.
Any questions out there? I gave up Taylor Reservoir on the Greenhorn Boondocking in Boondocking some years ago. Now you have a start. One in Colorado and another in Utah.
When you find these places... get the GPS location and a photograph. You never know when you will return again... or bring friends. Just remember... a dirty Airstream is a happy one.