Plot: After a ride out to the beach reservation known as Coatue with with Nantucket Conservation Foundation director Jim Lentowski to see both the natural beauty of the preserve and a 1920's fishing shack, used by the foundation's rangers, that represents a simpler time on the island, we return to the house. Our master carpenter questions Bruce Killen on his preferred method of clapboarding: 3"" exposure, sunken nails, an no back-caulking