Jack's Boathouse 3500 K St NW, Washington, DC20007 Jack's Boathouse opened in Georgetown in 1946. Jack's offers season passes, or you can come in and pay for water time.…More You can rent single or double kayaks ($12 per person) or a canoe for a maximum of three hours. New to Jack's are the paddle boards ($15 per person), where you can test your balance on the Potomac. The river is calm, so it's definitely beginner-friendly. While kayaking, you get to experience the nature on the river and see turtles and different types of birds. Jack's also has decks and grills, where customers can grill out and relax.