See my comments above in bold. I don't post much because it's not worth the effort and I don't have the time to post the full implication, elaboration and validation of the related issues involved- to fully support the concept. A forum really isn't the best place to do that. In summary, if you want the difference between a hand controlled pivot and pivot controlled hands- just read above.
I trained my pivot with my hands. My pivot works for them. In no way does my body transport the hands on an unfamiliar pathway.
I can't see how I can be so wrong. If I am than I will not take up much of anyone's time and misguide them. It's best to just return to the pleasure of reading posts and learning what I can.