Take the best qualities of the Old School fish and modernize and improve them and you have the MQF. Still a great paddler and speed machine, but now with a narrower tail, added rocker, single-double concave and two more fins this pocket rocket can now turn aggressively and rip up a face. It has a slightly thinner foil (than OSFish) for more sensitivity and to bury turns for drive. This thing works in barely any waves. So go fishing soon and catch some waves on the Modern Quad Fish!