I've now had a chance to view Chris' (cgeib) video.
Chris, this is excellent skiing, you have all the basic mechanics, all we are doing is tweaking.
It's this good strong skiing that makes MA all the more difficult, even for the more experienced instructors on here, who have all contributed valuable information.
I hope you'll (all) humour me as a relative newcomer to EpicSki, and indulge my passion for coaching and development.
There are of course many ways to skin a rabbit, and indeed to start off the MA process of a skier. For me, I have an image/silhouette in my mind, and I superimpose that on whoever I'm watching. This isn't the only way, it's one that works for me. But be careful not to confuse "style" or aesthetics with functional performance.
Secondly - I always look at the skier from the snow up. What are the skis doing, what are the feet, ankles, knees, hips etc. and so on upwards.
Thirdly - consider these points in the following order: Equipment, Morphology, Psycological Factors, Tactics, Technique (ref: Ron LeMaster).
Fourth - use a skills based assessment in the following order. Stance & Balance (fore/aft primarily, then lateral), Pivoting, Edging, Pressure Control, Timing & Co-ordination.
And so to Chris' video. It's great skiing, nice pivoting effort from the lower joints, rthymical.
At the end of every turn on most of the runs in the video (end of Phase3) - you see Chris' outside foot get "caught back", or "left behind". This is evident by daylight in between his legs, and also the large amounts of ankle flex in his outside foot.
Because the outside foot is caught back at the end of the turn, this makes initiating the next turn with a simultaneous edge change very very difficult.
I hope (the)Rusty doesn't mind, but if I could be cheeky and "borrow" his stills as they show this perfectly.
Here Chris' left ankle is deeply flexed, and the left ski is also pointing across the slope. It's also a bit behind the inside ski. But hang on, Chis is ready for the next turn, as shown by his right foot setting up an initial steering angle! But, he continues to go across the slope, as the left ski is still dominant at this stage!
Chris is now really desperate to turn into the fall line, so he heaves his hip around into the next turn. Helped along with the upper body lean to wind those skis into the new turn. He gets some air! But wait..... the left ski is still travelling across the slope, and although it isn't quite so clear in this pic, the ankle is still deeply flexed.
Now things are getting really hairy! Chris' upper body is fully committed down the slope - needing to get both skis down the fall line, he has no choice but to commit to the new outside ski, and release the old outside ski - by jumping them around.
And now, because of the inclination of the upper body down the hill, as he goes from Phase2 to Phase3, he will find himself on the new inside ski, falling to the inside. In this pic he is balanced predominatly on the inside ski. Could be he was trying to avoid the tree, but it's also evident on other runs on the vid.
So how would I start to develop this?
Chris needs to get that outside foot working around the turn, especially at the end of the (previous) turn, so that when it comes to initiating the next turn, he can either simultaneously pivot and/or change edges with both skis.
But wait. The reason why I started asking questions about his boots in the other thread is that something funky is going on with them. His ankles are deeply flexed for much of the turn, indicating a huge amount of forward lean. This and the upright back are indications to me that something is amiss around that area.
Chris, without seeing your boots etc. I can't make a remote diagnosis. But I would say there is something amiss that stops your extending your ankles to initiate the new turn, this could be a combination of the 8mm toe lift, aggressive forward lean, flex of the boot cuff etc.
All I know is that if you "drive" your outside foot throughout the turn, and not let it get caught back, when you come to initiate your next turn, you will be able to simply roll both skis over, using ankles, knees etc., and the upper body won't have to get involved initiating the turn for you.
Now we need to work on getting those ankles extended! Drills would include "jam jar turns", "telemark-type turns" etc. And inspecting your boots!
For me, the symptoms were the (small) upper body inclination (not a crime in all situations), upright back, deeply flexed ankles, the second half of the turns being steered faster than the first, a little down stem at the end of the turn etc. Root cause being a fore-aft stance/balance, in that the ankles need to be extended to initiate the new turn.