I know this is a late reply, but Port Burwell is a great beach.  It is private property and is a true nudist beach, not like Hanlon's point in Toronto.  If you're not naked you'll look out of place.

Rarely do you get gawkers as it's quite a hike to get out there from the public beach at the park, but we have seen on rare occasion, some teens who wander out for a gander, but they don't stay long.

If you like being naked and enjoy the nudist lifestyle. it's the best beach to go to in Ontario.

For those who don't know.  The best way to get there is to go in through the provincial park,  go to the 5th parking area, hit the beach and turn right.  Start walking... it's about a kilometre down the beach.  you'll see the sign saying you are leaving the park and entering private property.  The nudity usually starts  at that point. :)

The big rule, is to be off the beach by 5 or 6 as the owner likes to come down for walks and really doesn't want people around after that point, and clean up after yourself.  If you take it in... take it out!