We were in St. Martin for about 4 weeks, largely because our depth finder wasn’t working and I had to order one from the states. It took at least 2 weeks over the holidays to get it flown in. So we made the best of our long time in St. Martin.
A couple of times, we decided to go up the west coast to Grand Case. There are decent restaurants there, minimal supplies, and some decent snorkeling at the north end of the bay.
Creole Rock is on the north end, has a tie-up for dinghys, and is good snorkeling. It is a little exposed to the ocean, but was not too bad the days we were there.