I recall a group website w/local guy: maybe it was gaycampingbuds. Think his name was Manny. Anyway he had linked up with gaycampingbuds in other states, last time I checked. He was organizing a monthly hike or camp-out.
I never went because I'm not gay, but I am gay-friendly. I still cruise gay groups. When I find/participate in nudist activities, I'm sure I won't need to hang onto these gay n.et groups, because there I am just a v.oyeur. Hey, I found this group via gay links!
I have hiked nude a.t White Tanks County Park. On weekdays, hardly anyone is out there. Also in Rainbow Valley, E. of Estrella Mtn. below Avondale, I hiked w/a gay friend on county land. The first mile was a bit exposed to view from a roadway, but we went on. It sprawls for maybe 10 miles to the south. A coiled (sleeping, he said) snake in a wash got me worried. Don't know what to do around snakes. I might've continued if he didn't insist on a kiss greeting.
There's a clothing-optional h.o.t spring out in Tonopah, name escapes me, but I called them once for directions. A nude resort called Shangri La exists up by New River, must be near Anthem.
Let me know what you discover, eh? I'm not into gay play, just the hiking and kidding around.
It is true that there are not that many suitable places for swimming (nude), but there are a few...The Verde Springs, Some spots in Oak Creek Canyon...and there is no limmit to great hiking in AZ..The Grand Canyon for one!!