I lower my shin angle when i do foot, leg, hip, etc rotations like track team sprinters, and baseball pitchers & hitters. When lower shin angle rotates at the ball of my foot, it can look like my leg is moving forward. I am not stepping forward then stepping back.

https://youtu.be/oIj2kBiEz-g

I am exaggerating how i do it in this video, but the point stands. Can someone find me or show me a close up video of boxing foot rotation? I just want to compare notes although i think this gets more mass in motion momentum than someone who rotates without lowering shin angle at all.

I am at the stage of fixing my mma forms at the moment. (Done boxercise kickboxing gym 6 months 15 years ago, wing chun gym 6 months 15 years ago, several boxing gyms 6 months total over the years, and mostly self-taught in boxing and wrestling. So a lot of bad forms and bad habits here.)

My mma coach tells me to punch without using force but perfecting forms for now, but you can get away with wrong heuristics (which results delays, drags, etc) when not putting in force cause the consequences of the wrongs are not extreme neither. When using force using the exact same heuristics & forms, i found some unpleasant side effects, which i am fixing now. I have no side effects from lowering shin angle when rotating foot, leg, hip, etc, but someone seemed unfamiliar with lowering shin angle, so i want to compare notes.