We are staying in Newport for 3 nights but want to spend 1 day over in Block Island. Ferry leaves Newport at 9 a.m. and leaves BI at 4:45 p.m. Any plans / ideas would be helpful when exploring Block Island in 6 hour. Besides the Mohegan Bluffs, any other recommendations (places for lunch, sights to see & explore, beach to relax). Any help would be greatly appreciated. Thanks TA.