Tomorrow, June 19, 2010: The Downtown Boathouse is offering a 20-minute instructional paddle for FREE (Weather Permitting) for a limited time. Explore the Hudson River first hand. Please wear a bathing suit or shorts and a t-shirt, and know how to swim. Event is going on now til 5pm. The Downtown Boathouse is on Riverside Park South, located on the Hudson River between 59th and 72nd Streets.