Rent a kayak or canoe or take a guided kayak trip on the Hudson River. Hudson Valley Pack & Paddle, 45 Beekman St, +1 845 831-1300, (http://www.hvpackandpaddl...). From New York City to Albany the Hudson is a tidal estuary, so be aware of tides and currents as well as ships and barges. There is a public launch to the west of the Beacon railroad station.
