...here's another question that has less to do with appearance and more relation to function: Sometimes I shift sideways on my mat to be closer to the wave face for more speed. But then I have to shift back to the middle to cut back. Is getting over the inside edge even necessary? I can't really tell whether lying on the inside groove actually helps, but that's what I find myself doing, although when I remember to stay centered there seems to be no drastic reduction in speed and grip on the face. What have other surfmatters found in this regard?