Thank you for posting a great trip report. AH we also have fond memories of Dawn Beach for a stay there 1981.
When you said you walked to Dingy Dock, where from? We'd like to try it next visit.
Dinghy Dock is in Simpson Bay now. If I am correct it may have moved? Maybe even from Dawn Beach?
They're on the strip in SB now, not too far from the SBYC. We stayed on the beach in a condo a few buildings away from Mary Boon.