I think markers totally depend on the conditions, skier, speed, and rope length. What works for me might not work for you.
For example I usually ski at 36 (22-32' off) and tend to pull out as the nose of the boat gets close to the 55s. However depending on the wind, I may move that point forward or aft 10'. As the rope gets shorter I feel I have to pull out harder to get the width from the boat. I tend to turn into the gates as the nose of the boat is going through the gate balls but I really need to work on that as I miss my gates pretty often.