I have never been on the Shallow Bar boat but I have seen it in action from the Great Bay beach. It's a pontoon kind of boat that is a bar. They leave from Frenchman's Beach. You can check at Eggy's beach bar or Fisherman's Restaurant at Frenchman's beach or Jakes/Jack Sprats on info on how to arrange a trip. The floating bar goes around the beaches/bays in Treasure Beach and stops near the Great Pedro Bluff in Great Bay. There you can climb up the bluff and jump into the sea or you can just jump off the boat if heights aren't your thing. You can swim or snorkel around the bluff and see the sea life.