The Wateraft comes with a bungee-cord tethering system. There are instructions provided, detailing how to punch the tethering grommet through the foam. The loose end of the bungee system should be anchored down. Some people have used cinder blocks or boat anchors. Always ensure there is a safe distance from any hard surface, such as a dock or underwater obstruction. The Wateraft is designed to lay flat on the water. We recommend that the bungee line remains below the Wateraft so feet and arms don’t get entangled or the bungee line does not put excessive pressure on the grommet when the raft is in use.