Norman is a safe bet on finding a late mooring. Also, have you considered having your sister take a taxi to cane garden Bay. Or pick her up at Sopers hole then off to jost for the night, little harbour or possibly great harbour could work. They are close to Sopers hole.
Warren S/V Scuba Doo Lagoon 50 (winner of best crewed yacht under 55 feet at the St. Thomas crewed yacht boat show).
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