the "Jost Van Dyke" "bubbly pool" (which is no longer a big secret it used to be) is a fun place, though getting popular.
frankly, nothing in BVI is "off the beaten path" anymore - anywhere you go, you will most certainly see other boats and lots of people.
that said, it's still beautiful and good to visit.
The Bight is getting a bit overcrowded with sports fishermen from Puerto Rico who made it their favorite hangout, ditto for the Caves. If you want to see the caves - go real real early in the morning or later in the day when most of the tourist crowd and cattle boats are gone.
The Dogs are not quite as crowded for a nice pretty snorkel. Otherwise USVI has a few places with less people and good scenery, including some where you are pretty much guaranteed to be alone (but then you need to waste time checking out/in etc)