We are going on the 7 day Magic in May and have found this board to be a great reference. We are trying to decide which beach to snorkel at in St. Thomas. St. Johns sounds great, but there is not enough time there for us, so we want to "excursion on our own." Today, at Barnes and Nobles, we read in several books that Coki has great snorkeling, but that pickpocketers/theft is a problem there. Does Sapphire have just as good of snorkeling as Coki? Thanks