Question on SLS/PE2:
Clearly full ROM is required for a good SLS, I did pre- PE1 by doing good old fashioned bodyweight squats focusing on control, low speed and full "Asian toilet" range of motion keeping my heels on the ground. This gave me the compression that I was lacking for deck squats (limiting my ability to transition from roll to standing without falling backwards). Now after progressing to SLS/PE2 I find that I can't seem to get much below parallel before my heel needs to come off the ground. I notice that in the video example, the athlete's heel does seem to slightly lift from the ground at the end of the movement, but far less than mine.
Should I focus on doing the exercise to the limit of my ROM with the heel on the ground, or am I better off focusing on getting my thigh down to my calf even if it means a heel lift, which will hopefully reduce with time?
Secondary question if anyone can help:
In SLS/PE2, the iM is my limiting factor. My knees seem to complain with the volume of the twisting squats, so I need to pare back the volume on these and build up slowly. Can anyone offer some pointers to think about better control so that I don't hurt my knees?