The rippetoe way (driving the butt straight up all the way without pushing your chest/traps into the bar) or driving the butt forward and your traps/upper back into the bar at the same time like described in this thread?
http://www.pendlayforum.com/showthread.php?t=3364
Granted the link describes a high bar squat but I have seen other famous coaches like pendlay, louie simmons etc advocating the same style for low bar too.
http://www.pendlayforum.com/showthread.php?t=3364
Granted the link describes a high bar squat but I have seen other famous coaches like pendlay, louie simmons etc advocating the same style for low bar too.