Camber, or bridge or concavity. Since ancient times, the center of a ski or snowboard placed on the ground does not touch the ground until we step on it. Where the ski or snowboard touches the ground are the two points: the nose and the beginning of the tail. The edge section between the two points is the "effective edge", the working edge section. It resists the rotation when I turn, but at the same time it holds me against drifting. The CAMBER i.e. concave bridge ensures the right edge pressure on the track. On the other hand, it is the most snappy structure.
What does this mean? Skis and snowboards are like a drumstick under my feet, from which I raise my center of gravity. When my center of gravity is high, I change edge (turn) because there is no edge pressure. So, right before the round, I "jump" off the train.
CAMBER is best for this.
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