Type of crowds I'm assuming as well. My hint should have been during the previous visit when I was gathering my belongings before hiking in and overheard a couple talking with another family camping there two cars over, that given they had kids, warning them of the nudists in the area ... and that you may encounter them even at the start of the trails. I don't like to stereotype, but given the raised pickup truck, they may have been local. Funny perception though. Growing up my mom used to set as free naked running around the beaches of the Baltic sea, seeing other grown-up nudists as kids and by some miracle we turned out normal.