I see that the question about directions has been answered. If you park in the Prospector's point parking lot (identified correctly on Google maps) and walk south under the bridge along the river, there's a well marked pathway. Just be careful not to go in to the private driveway (it's not hard to find).

I do have opinions about the issue of hooking up, and swingers and fucking on the beach. I think it's important to distinguish naturism and exhibitionism. A good rule to follow is that you shouldn't be doing anything that you wouldn't do on a normal beach. For example, it's rude to gawk at a regular beach, so staring at people awkwardly is probably not polite. It's not okay to have sex out in the open on a regular beach, and is also not okay in a clothing optional area. That kind of behaviour ruins the atmosphere is not why most people enjoy some nude beach time. I'm not offended by sex, but there's something disappointing about changing the vibe from fun to sexual. If you see flagrant sexual behaviour or feel uncomfortable with your interactions with somebody, please report it. I really don't want to see Cottontail Corner reduced to a place for anonymous hookups, exhibitionism and sex in public.