Just what I've been trying, Garrett; meanwhile, the only squat that I'm really pushing to the limit and adding weight to every time that I do it is the front squat.
Meanwhile, here's the vid of my "good" high-bar squat for comparison, now on Youtube instead:
Kevin, I usually try like hell to squeeze my glutes. Also, I don't normally just focus on pressing through the heel, but rather the heel and midfoot/ball of foot too.
Comparison of the two high-bar vids shows a marked difference in form, don't you think?