Goosey
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I would disagree with pulling up not back...I find pulling back engages my hams and glutes more and gets the chest up.
I guess everyone is different, I do totally agree with just bending over, and finding your strongest position.
Dicko, I suppose what I'm trying to point out is to maintain the same position over the foot, the mid foot in this case.
You don't want the load to shift to either the heel or toe in the process.