You and tertius have convinced me now; I have to get Starting Strength. It may get me past my old problems with how my lower back get taxed by squats. I think that I mostly do a sit back movement, but as I have given this some thought overnight I realized that like you tertius, I almost certainly alternate between that and dropping down between my legs. I do know that given some advice I read long ago I never look down. That part always made sense to me because there's an old adage in judo I learned when I was 18 and it certainly true in every other martial art I have ever done. The received wisdom from the East says "Where the head goes the body follows." I'm pretty sure it was something I read in Strossen's book Super Squats. He said looking down can cause you to round your lower back. Having said all this, I just need to buy Rip's other book and read it.