Sit on top Kayak Carrier: West Marine Scupper Pro 2 Kayak Cart. 2 posts set into the sit on top Kayak scupper holes (adjustable width) to easily move your heavy sit on top Kayak from car to launch or storage. Holds up to 150#. Large wide solid urethane wheels for sand and gravel. Easily move your heavy sit on top boat from car to launch or storage. Used only twice, sold the boat. Item no longer available from West Marine.