In fact, in most cases, there is no absolutely wrong action for a single board, only whether the action is appropriate under specific circumstances. In any terrain, it is not good to just rely on the back edge to rub the snow to control the speed. It needs to be combined with the edge to achieve sliding stability (speed and stability). The action of rubbing the snow with the back foot is not suitable for turning, but it is suitable for controlling speed.
In many videos, especially videos of jumping off the platform or going up the bar, many skaters will do this action to control their speed. And there is also a special name called speed check. But please note that this action is only used to slow down. In other words, the skater's gliding direction is almost unchanged before and after doing this action. And this action only lasts a short time. On the other hand, if you are making a turn, especially a basic turn (non-carving), you should avoid rubbing the snow with your back foot. Because this will reduce the body's balance ability. The correct posture is to use your upper body to turn in the direction you want to turn the board (if you want the board to turn left, your upper body must first turn left).
When encountering steep slides and poor snow conditions, carving is basically impossible. At this time, you need to use basic turning techniques to respond. But the basic turning technique is not to rely on the back foot to rub the snow, but to use the body to turn the board. However, if the speed is too fast when crossing after turning out and before entering the turn, you can use your back foot to rub the snow to control the speed. Scrubbing and edge walking are both technical movements of snowboarding. There is no right or wrong technical action. The advantage of rubbing snow is that you can slow down and change the direction of sliding. The advantage of edge walking is that you don’t need to lose too much speed. , you can change the sliding direction.
Carving is a type of skiing technique, but it’s okay if you can’t touch the snow close to the ground. However, it is recommended not to rely on rubbing the snow on flat snow trails. As the number of kilometers and snow age increases, , carving is easy to do. Carving is not the only right way. Moreover, carving has high requirements on snow track conditions and cannot adapt to complex terrain.