Channel Islands 5ft 10in DFR Surfboard. The Channel Islands 5ft 10in DFR is an ultra-modern short board. The plan-shape allows for a short rail line while maintaining drive. The bottom is predominately single concave and features an aggressive flip in exit rail rocker. A full outline provides enough volume to ride the DFR about the same length as your height. This short board is not only ready for big airs but also allows for the heaviest carves you can lay down.