Beginners can slow down by plowing, that is, the double board forms an "eight" shape inside, bends the knees, faces the upper body down the slope, and leans forward, sliding down in a straight line. The greater the angle of the figure, the slower the descent. The slower. After learning the plow style to decelerate, then practice the plow style turn to decelerate. That is, the double board forms an "eight" shape, curved, and uses the double board to alternately exert force and descend along the "S" route. Intermediate students use parallel turns to slow down and slide down. .