I have been watching some of these fighters training again and they seem to only rotate the fist about 45 degree instead of 90 degree as i always thought was the correct way and also what about jack dempseys lead left jolt with the vertical fist,didnt he say something about it being more pure that way,perhaps thats the idea behind just rotating it 45 degree so that you get more power yet still get the snap that the rotation gives...Has anyone heard of this before?