Docks and Beaches We have several beaches with docks that are accessible to all of our guests. The Main Beach Dock is next to the office and is Lake Okoboji's largest dock. There you can enjoy our 20' man-made sand beach, protected swimming area, swim platform, or relax on one of the many lounge chairs. All boats also depart from the Main Beach Dock. There are three docks at North Beach. There is one in front of units 152 & 153, one in front of units 141, 142, 341, 241, 342 and 242. The last one is a small private dock at Cottage 150. These docks all have lounge chairs that are perfect for relaxing. The glacier formed shoreline is rockier at North Beach. The South Beach Dock is located approximately two blocks south of the Main Beach, and is easily accessible from units 101 - 117. This area has a natural sand beach south of the dock, and it lies next door to the newly enhanced beach area of the Amusement Park. Cottage 160 also has its own small dock.