There's boondocking, and then there's National Recreation Area boondocking near Lone Rock along the shores of Lake Powell. If you want an introduction to this kind of camping, this is a good place to start -- call it "boondocking light." With freshwater available, a sanitary dump and even flush toilets all within walking distance of the dispersed camping area, you can pick and choose your level of comfort.
You can also choose how far out onto the sand you want to go. This area could easily hold thousands of campers, tents, RVs and Vans, like some camping festival rock concert, where the main act is the daily sunrise as it hits the massive tower of sandstone lending its name to the area. So, you won’t need to worry about making a reservation even during the most popular times of year.
Sand is an issue here, in your hair, in your food, in your trailer, and under your tires. Once you leave the pavement, it's best to stick to the tire tracks of the many vehicles who came before. There are places where the sand gets pretty deep and soft and we saw just a handful of vehicles requiring a push, tow, and otherwise shoved pack to the hardpack. Most of those however, we either pulling a big rig or only had 2WD. Fortunately, there are more than enough 4WD vehicles driven by enthusiastically prepared people just itching for the chance to use their new tow strap. Have a six-pack at the ready and be willing to make new friends.
The main toilet block is located above the main camping area with running water and flush toilets, but no showers. The outside swimming showers and drinking fountains were closed as a result of COVID-19 and water restrictions (it's been a major drought y'all.) Additionally, many portable vault toilets can be found scattered throughout the camping area minimizing the walk to the toilet.
The local area is simply brimming with outdoor adventure activities from hiking, and paddling to canyoneering and motorized off-road recreation. The destinations are picture-worthy from mountain summits to slot-canyons and horseshoe bends in the Colorado River. The nearest town with all the usual services is Page, AZ, just across the state border. There you will be able to stock up on groceries, fuel and anything else you might have in mind.