Have a great trip! I would also suggest trying to hitch a dingy ride from Foxys Taboo to B Line- I saw people snorkeling around out there and was worried because there were so many boats flying around.

Also- small world- my dad grew up in Dartmouth, half my family is still in that area (Dartmouth, Mattapoissett) and I spend a week every summer at our family beach house in Fairhaven!