Many people like paddle boarding, but my preference is a two-person kayak, which is more stable if the wind picks up or in the wake of a boat.

June 9 is a two cruise ship day with 7,000 visitors. The Baths, Brewer's, CGB and maybe Smugglers will be packed. I have not seen many excursions at Diamond Reef, so you might try that. Then consider anchoring overnight in Lee Bay.