Mayde bring you the Avalon Poncho - the one for the surfers, the campers, the nomads and adventurers. Throw it on when changing out of your wetty, or changing into your swimmers. This is the ideal change room thats soft, keeps you dry, keeps you warm and keeps your privates private.
Throw it in your travel bag or keep it in the back of the wagon, and guys keep an eye on your girlfriends - they'll want in on this action too.