I'd second White Bay on Guana Island - although I never thought of it as a hidden gem or anything because its pretty open and out there! The snorkeling at Monkey Point is really good! In fact, its the only place I have ever seen a dolphin in the BVI! Really nice beach, too. Very pretty spot.

The other thing about White Bay that you'll love is that they have moorings there (don't have to use them but they exist)! Best of both worlds! Just be careful of the winds - the bay is pretty open, so if the winds and waves are coming from the wrong direction, it can be a bit rolly.

I'll be following along - I am always looking for new spots to check out!

Fair Winds!