ey, you're on an island. Get in the water. First find your way to Island Spirit Kayak, a funky little business parked every day in good weather on State Beach in Oak Bluffs, which offers half- and full-day kayak tours, sunset and moonlight paddles that include a picnic on the beach, sunset paddles to the Aquinnah cliffs, a combination kayak and cycling tour, and plain old rentals and lessons along the picturesque Sengekontacket barrier beach.