Self-explanatory. I’m 6’4, have long ass femurs, and recently I shifted to bodybuilding from powerlifting. I really want to include high bar squats, and since I’m doing so, I want to do them ass-to-grass. Buttwink is a serious problem in my case, even though I have really good mobility. I’m also currently planning to buy elevated shoes to help me with my squat, but until then, what can I do to go as deep as possible without rounding my lower back?