The RSS (Rocker Stiffening System) battens and FFC (Forward Flex Control) rod are removable, exterior elements designed to stiffen critical areas of the 12’6” Elite and other Red Paddle Co. iSUPs. The RSS battens are placed into special sleeves on the rail of the board on either side of the standing area, and the FFC rod is placed into an anchor system on the front third of the deck. These systems prevent excess flex while paddling or in choppy conditions.