It's true, the car & jeep rentals in St Barth's now have GPS. As you go to one of the ten beaches around the island the voice tells you in a French accent where and when to turn. Scuba is the best with many 30 foot deep clear turquoise waters and plenty of schools of fish. The fish are in every color and very tropic, of course! The yachts in the harbor are the biggest too. I met Gil Haroche once who was the founder of Liberty Travel. His yacht was called "My Toy" I think it was over 100 feet.