So Muscle memory is what makes you effective at pulling focus. It was amazing to watch a career B camera 1st who was just on an 11:1 his entire career keep it sharp. With the creation of premarked rings we are able to utilize that same twist of the wrist to be consistent. It is great to know how much to turn to go from 17’ to 5’9” without looking. That is why most 1sts will always stick with the same ring no matter what. For me I have a slightly different approach. I use 3 rings depending on the range that I am playing in. If I am doing A long lens walk up from infinity, I will use the long end expanded ring. For the day to day I will use a mid balanced ring and then have one that is expanded on the close end. I act like I am shifting gears on a car and can be fairly proficient at it by limiting to those 3 rings.