A smooth and continuous rocker arch provides fast, smooth rides and allows you to turn more easily. You can also generate a lot of speed on a continuous rocker wakeboard while eliminating edge-bounce felt by a 3-stage rocker. Speed plus a very predictable pop (height) will shoot you further out into the flats. Continuous rocker wakeboards are really great for carving, especially on those glassy-smooth mornings. Difference in rocker/fin reflects variation in size.