Practicing all the moves in coordination of my hands has been a big part of my training and still is. I also think just like mastery in any other artform/science you have to learn when to break the rules. Switching your stance, crossing your feet, feinting with your feet along with other things should be considered and understood when everything else has been mastered.

On top of that the boxing ring should not just be looked at as an area for you to move about, a big part of ring generalship comes from controlling the circle.