When athletes perform a tuck jump, they start in the “athletic position” with feet shoulder width apart. From a slight crouch the athlete swings the arms behind and jumps straight up. The knees are pulled up as high as possible and tucked under the bottom.
There are several common mistakes athletes make when completing the tuck jump.
Videotape yourself and see if any of these are occurring when you do this jump. Pick one area at a time to work on. When you can see the desired result on videotape, choose the next problem and perfect that. Make sure each component remains as desired while adding each new movement.