I patented the structural means to use a hammock on water. The product's power sources are sails built into the frame, a rudder, and two specially designed paddle boards support the hammock frame which enables paddle boarding. Also, for the kiteboarder at heart an inflatable kite can be used while you relax on the hammock. Please review: www.thewaterhammock.com for more information. Launch is set for summer 2013 in Southern California.