So I recorded DD doing her warm up walk throughs the other night. I thought I'd post it to show how little leg drive she uses. Or am I wrong? To me it looks like little more than a large step, with most of the power being delivered from the arm. Obviously there is some forward momentum, but clearly not what i would call a concentrated "drive".
Seems more like a run through than a walk through so there may be more drive energy created than assumed.