legal pitching motion

Question
QUESTION: I am coaching in a youth league with teams in u10 to u17.  there is some discrepancy as to whether it is legal for our pitchers to use a rocking windmill or not.  some of our authorities have interpreted the rule that a pitcher has to release the ball upon her first forward motion past her hip (thus eliminating the rocking part).  However, I did find a diagram of this as legal on the rule site for NCAA ball.  what would you say is legal?

ANSWER: If you are talking about reversing the forward motion of the arm after the hands have separated then reversing the motion again back to forward.  Illegal.

---------- FOLLOW-UP ----------

QUESTION: i know it is difficult to describe, but for clarity, i am talking about bringing the hands together, then after separation, bringing the pitching arm behind the pitcher, past her hip; coming forward again into full rotation around for windmill pitch (thus passing the hip going backward once and forward twice)........  if NCAA says it is legal, why would ASA use different rules?  is it simply an unenforced rule at ASA level?

Answer
As you describe in your follow up, the delivery is completely legal.

Hand goes past hips backwards as part of the windup  - doesn't matter.

Hand goes past her hip forward as part of the windmill - first time past hip.

Hand approaches hip for the second time and ball is released in the vicinity of the hip.

As long as you do not have two foward revolutions of the arm in the windmill prior to delviery, this aspect of the pitch is most likely legal.