powerplant42 wrote: ... High bar (stretch-whip): Hit a big nice split. Keep a long trail-leg whipping quickly... Use this intertia to carry my hips up through a "hitch/lock". Keep the drive knee IN FRONT of my trail-leg. (In my experience, this is actually much more difficult to do than letting it drop... Also I had altius coach myself on that very same bar to keep the drive-knee DRIVING "UP OVER THE HEAD"... Remember that there is a bar there as well.)

If that's your INTENT, then I think that's fairly good. The split you refer to is what Butler calls the "elastic stretch". Now that I watched his vid (last year) and AGREE with almost everything that he sez, I think "stretch" is a better word to use than "split".
I like your use of the word "inertia". That's the same way I think of it. Your INTENT should be to get that inertia (or momentum) generated by a long, powerful downswing ... and feel this power as your hips rise up. I think you get this now.
I wouldn't have used the term "hitch/lock" ... it's just not in my vocabulary ... but I guess the INTENT of that part of the drill is OK ... not sure ... it's a trivial part of the drill IMHO (I'm back to saying that what you do after you feel the inertia of your whip isn't critical).
Focussing on keeping the lead knee up is important.

If you're lazy about this in this drill, then you're going to be lazy about it in your vaulting technique.
Re the bar being in the way, that's one issue in doing the Stretch Whip Drill on the highbar (you don't have this problem on rings) ... I'll expand on how I handled that issue in the Training thread ... later.
Kirk