Ken, I'm a bit confused with the drive the outside foot forward idea. What specifically is it attempting to do? When does it happen? What does the outcome look like?
I'm confused because going into the transition the new outside (uphill) foot is forward already, because of inside tip lead from the previous turn. Not getting why it would need to move forward even more.
I received a PM that pointed out the word "drive" might be causing some of the confusion. If we replace that word with Slide or Slice, maybe it makes more sense?
IIRC (its' been two weeks since I've been on skis ) the drive/slide/slice happens right after (in my opinion) someone would correct their fore/aft positions by sliding the inside leg back, so that would be right around the time entering the fall line.
Maybe all the confusion is a timing of when you are doing what.
In Ken's simple head:
If you're pulling back your inside ski when it is the downhill ski upon entering a turn, you're aft and need to correct.
If you're pulling back your inside ski when it is the uphill ski coming out of the turn, this is probably a preference and achieves the same as sliding the outside forward, though you have moved body parts backwards instead of forwards.
If you're sliding your outside ski forward when it is the uphill ski upon entering a turn, I'm not 100% sure why you would do this but I think you would be a very impatient person.
If you're (still) sliding your outside ski forward when it is the downhill ski coming out of the turn (more likely you started this just before the fall line), you have minimized tip lead, have a dominant outside ski (though there will be some weight on the inside ski) and it puts the biggest of smiles on your face.
When I'm skiing, especially on edge carving, I'm thinking of round turns and skis slicing the snow/ice. You can't cut through anything by putting a knife edge against is and just pressing down as well as you can by making a slicing action with the knife. Isn't that what we really want the ski to do? Yes the skis are doing this since we are already sliding, but since I want the outside ski dominant, it has to do it more/better. I can achieve this by toning down my inside ski's slicing, or increasing my outside ski's slicing. I prefer the latter.
The above is how I think things are happening.
Does that help explain what I'm doing and possibly why I'm confused about the whole push pull debate?
Please keep in mind that I'm not trying to state my way is "the" way. I am trying to state that with my limited knowledge/experience skiing, that what I laid out is at least pretty close to correct. If it isn't, I would love for someone to explain to me what needs to be changed and why. I only want to ski/coach better. I don't care which side (win or lose) of the debate I end up on.