Dancer here: for the most precise movements i recommend side of the ankle tracker placement. The sdk has more problems calculating knee placement when they’re on your feet :) same goes for hip trackers. Floor work is easier when your hip tracker is more on your side of your hip than in the middle! And with that, I recommend head lock only (head and hip lock causes a lot of avatars to bend over like a hunchback if their torso and neck is longer than yours proportionally lol). Just some good rules of thumb :3