When you say little magen's beach - do you mean - Magen's Beach? When you look down on it from Moutain Top - it is beautiful. The beach itself is also beautiful. Coki Point has better snorkeling however.
We went last minute there, it was over cast that day, just stayed an hour it is a long beach not big, it looked better to me from the top looking down when the taxi stopped so we could take pictures. I was not really impressed with it, but it could be it just was over cast that day, my coworker went while on business and brought his son and loved it. Enjoy. I have pictures and they came out nice.
This a smaller beach close to Megans bay, it is used by topless or nude swimmers I belive. One reveiw sited that sometimes your clothing can get stolen while here if your swimming, so there maybe a crime element here. While it looks pretty I don't belive it has the same amenities or safeness of Megan's bay, Sapphire, or Coki beaches.
i'm definately looking for a clothing optional beach. not something i'd normally do, but i figure, i'm on vacation, i'll never see these folks again...what the heack. if there's a better one, let me know.
In St. Thomas little Megans I belive is the only beach where people go nude, it is not allowed on this island but I've read they over look it at little megans which is frequented by gay men. So this might not be the port for nudity. You might want to check your other ports. Go to Megans bay and ask the locals about Little Megans. Or take a walk over and check it out for yourself. Also do an internet search on Little Megans bay or beaches of St. Thomas to read up.