nature walks / bike rides / hang gliding??
 

Been too busy to venture out lately, but hope to get up to hike/ cycle on the south downs way, soon..


I wonder, do any of the hang glider folks, allow naked passengers??

Yes they do allow
 

Mine has done the following nude: scuba, billiards tournament, cycling, ultralight flight, white water rafting, hiking in nature, bungee jump, water ski, windsurf, standup paddle board.
If you arrange with staff ahead of time they will sometimes give her a timeslot to not offend other patrons. An extra tip helps. Not all of these activities lend themselves well to nakedness, as some require safety harnesses that chafe the bare skin.