This whole discussion has avoided the obvious point: "why organized nudists need towels". Seriously, I hate to carry a towel and it is solely to be used to keep a seat clean from our possible dirty asses. The towel is a symbol that we shouldn't be naked. Alternatively, if we are clean, no towel or "towel shame" is needed. Therefore, the art of free range naturism requires some hygiene practices. I always wash myself after defecating. In my ramblings, there is always a river, creek, shoreline, garden hose, or even a shower stall somewhere nearby. So squat (squatting is best), wipe, wash, and then I'll proudly sit any damn place I choose, and without the naturist's flag --the standard white towel.
../Alf