Post-hike showers in a Covid world?

I'm a big fan of sun showers, though in hot weather, just leaving gallon jugs of water in your car will go a long way. Sometimes the jugs are easier to handle if there's nowhere to hang a sun shower.

I can get pretty far with just a washcloth, water and clean clothes.

There are a lot of variables involved here. But my more common method involves storing a few gallons of water in my pickup truck before I leave home. That water is lukewarm by the time I arrive at my location. If the trailhead or parking location is isolated enough, I'll carry a two liter jug of water to a place in the sun, or if I can get away with it, strip down right at the trailhead. Then I'll pour enough water over my head to shampoo and soap down, then rinse off with the rest of the water. I can brush teeth (or shave) in another location or before or afterward.

If the trailhead is populated, I may drive (still wearing my backcountry clothes) to a parking place where no one is around. Any pullout, closed logging road, etc. is okay with me. Then I grab my small toiletry kit and two-liter bottle and walk off into the trees, behind a small hill or bank and clean up in the same way.

A cold pond or shallow stream is a rare treat, but if I happen to find one, that would be the luxury version for my methods. I have at times driven 50 miles to a reservoir and isolated picnic ground (on my way home) and even if I have to go skinny dipping in the dark, it is well-worth the wait.

The methods above do not involve Covid19 risks, but I would be willing to use a truck-stop shower as long as the access route was not crowded. I would not be inclined to hang around a crowded truck stop just to get a good shower. It's not worth the risk, as far as I'm concerned. I don't think the bigger risk would be in the shower itself but among the people I had to be near to get to the shower.

And I don't mind jumping into cold water, even at night, but I am inclined to hyperventilate just beforehand.

Back to the variables: I've been to many locations that were not up to my hopes and expectations, even for a primitive cleanup. And I have had to improvise along the road somewhere. Surprises lurk anywhere. That means I've accidentally mooned everything from a helicopter pilot to a cross-country bicyclist. Gosh, they are quiet. Oh, well.

I do bathe and rinse my clothes daily (if possible for drying) while hiking, and I find that keeps the funk down pretty well. But like others, I still like that hot shower with soap after the hike. However, in the time of COVID I will settle for a dip in a stream (no soap) or a jug of water poured over my head. If I take the communal Eurovan (shared with my brother-in-law) to a trailhead, that has a shower of sorts—a sprayer like cheap sink sprayers, off the back of the van and using the water in the tank, which doesn’t warm up much. We used it in 2018 after 9 days in the Sierra, and on a hot day the water was warm enough, and the spray strong enough, to wash hair as well as soap our bodies. Did it right in the parking lot, fortunately without interruptions.

For any kind of rinse or shower besides a stream, I have a basin (actually a cat’s litter box, which is bigger than a dishpan) to stand in. That also allows the accumulated water to soak some of the dirt off the feet.