Issue
Why can't I complete spin?
Use a Leading Motion
Mechanism / Why It Happens
Rotate your shoulders quickly to 90 degrees. Turning them too far will only throw you off balance.
If you closely observe a backside 180, you'll notice that the shoulders begin rotating first, but their rotation slows down partway through, allowing the lower body to rotate past the angle of the shoulders. This leading motion of the shoulders is certainly important, but a common mistake is exaggerating it too much. In reality, in many cases, the shoulder rotation slows down once it reaches about 90 degrees. Trying to rotate them any further will only cause you to lose balance unnecessarily.
What to Do
There are two reasons to rotate your shoulders.
Your arms and shoulders serve two purposes. The first is to generate rotational force. The second is
