Ocean Kayak Scupper Stoppers - Scupper Stoppers can be used to plug the scupper holes in the cockpit of your Ocean Kayak sit-on-top kayak. This prevents water from splashing up through the scupper holes, helping you stay drier while you are paddling. Although they are not required for paddling, many paddlers like them, especially in colder conditions. Ocean Kayak Scupper Stoppers are sold in pairs.