We went with a 3 young teen boys a few years back. I rented a couple of the sit-on-top kayaks and they were fun for the boys, and the adults, to explore harbors and reefs
A pain in the ass because you have to make 3 visits to customs
: check out of the bvi and back in on return, but we really enjoyed going to St John... easy morning's sail from Jost Van Dyke to Cruz bay where we did a little shopping
grabbed some lunch, checked in and out w US customs
. Then a few miles up the coast, moored in St Francis bay, dinked to Cinnamon Bay. Great beaches and snorkeling.