J.F.K. PT-109 Boat Patrol Upper Dells Tour departs from the Dells Army Ducks ticket office at 1550 Wisconsin Dells Pkwy. After a brief shuttle ride to the boat dock, passengers board the J.F.K. PT-109 Boat Patrol for a leisurely 45-minute tour through the Upper Dells of the Wisconsin River. Knowledgeable guides describe how the towering sandstone bluffs along the river were formed and point out landmarks with such whimsical names as Steamboat Rock and the Giant's Shield.