Today in the gym there was this tall woman (or at least I'm kinda sure it's a woman) who was about 6'2"-6'3" there with a personal trainer. They started off with squats only the personal trainer told here that the top rack position was too high but the position below was too low (that second position is find for me though at 6'2"). So what does the personal trainer do? She gets one of those aerobic steps, puts it under the bar and gets her to unrack it from the top position standing on that then walk off the step to squat. Then she had to walk back on the step to rerack the bar.
Care to guess how deep she was squatting? If you guessed quarter squats (or what looked like knee bends), you'd be bang on!