Now that I think about it, I should take some video and see what my low back is doing on front and back squats at depth. My self-awareness isn't too hot in the hips (part of what the Feldenkrais is for). Anyhow, if it looks like I'm not rounding too much with back squats, I may just switch to those. On the other hand, why not front squat 3x/week?
Speaking of Feldenkrais, holy crap, it's awesome. The new-agey aspect is annoying but I just feel myself clicking with myself (make sense?) as each class goes on. The lesson we did wasn't as mind-blowing as some of the others I've done but still...pretty cool.
ya definitely get some vid..
as for why not front squat 3x/week, well, just from a motivation/avoiding staleness standpoint i'd do it.. as for as the CNS is concerned, motor learning is a bit better with interference, such as in adding the back squat day.. for example, from a basketball perspective, when perfecting your jump shot, you dont just shoot from the same spot every day, you mix it up.. now im not saying you'd need to mix it up and be all over the place, but, just a small bit of variety can improve your motor learning since they are such similar lifts, and keep you from getting stale.. staleness is definitely affected greatly by lack of variety, even a small bit of variety will keep you from getting stale.. 3x/week front squat is fine, but, i'd think mon/fri FS and wed BS would be much better..
peace