A hockey stop is an identical movement to the one an ice-hockey player uses when stopping on skates. Place your skis in a parallel position. Through a quick twist of the feet and body it is possible for you to stop quickly. You need a trail that is neither too steep, nor too flat, preferable a well groomed intermediate trail. The better groomed the trail, the better your result.
Continue with the short skidded turns as in the previous exercise. At the end of the turn, twist your skis so that you almost come to a complete stop. You should keep enough speed to be able to continue skiing into the next turn.
When you twist the skis, your chest and upper body should always face down towards the valley. This position is central to the short turn.
Take a few runs where you concentrate solely on keeping your chest facing the valley. Your legs (and skis) should turn beneath you without affecting your upper body position.