did you see the GM video on my log?
I have a few cues I tell myself. First and foremost is to keep my head up. If my head drops, my chest drops and my back rounds = no bueno. Second I use a pretty low bar. A tidbit lower than a squat low bar, typically just below or at my rear delts. Third IS I pull my toes up as to stay back on my heels and I REALLY push my hips back. I want to feel the stretch and contraction in both my hips and my glutes as I'm coming back up. Don't worry about getting down to parallel. Everyone's flexibility is different. Go until you feel a good tight stretch and then push your hips forward to come back up. Don't try to throw your shoulders back, use your hips to stand back up to erect. The video is of me doing heavy weight but if you like, I can take video of me doing lighter weight. Typically the heavier you go the more of your legs you involve, as is the case with my video I am squatting it a little too much.