How to "chamber" the long range rear hook?

[Scrap]

Still the clip at 0:41 in no way does Mike Tyson torque the hips violently as he says his power comes from leverage and bending the knees. https://m.youtube.com/watch?v=5jn1RZuKmDE

What you have to understand in all of this, is the role of the Tensor fascia lata . and how it incorporates, the whole posterior chain for drive, with heel up knee bent.