A few well placed signs should do the trick. Kind of like Haulover Beach near Miami. Something like: "Notice: You may (will) encounter nude sunbathers past this point." That should do it. On the Balearic Island of Mallorca, Spain the famous Es Trench beach has a large nude section right in the middle of it. No signs indicating this, nothing. No one seems to notice or even care. First time my wife and I walked the shore there we were strolling along when she said to me "check this out. Everyone's naked." I looked around and said "yep, isn't that great!" Soon, we were back among the people on the textile beach and the transition was totally seamless (no pun intended). I seriously doubt that the clothing-optional portion of Orient Beach will ever go away. It's part of the culture of St. Martin, and in my opinion I wish more of the great beaches around the world had clothing-optional sections.