OK, I collected 3 things in series of 4 images. I'm trying to guess the possible causes and would like to see PMTS expert's comments if any of my remarks might be right. This is intended to help me better understand the skiing concepts and not to trash DD's skiing that I find nice and smooth BTW. If I saw from the skilift DD as he cut RR tracks below I would probably conclude that he rips. I marked some angles on photos to better show you what I refered to. Please keep in mind that because of camera perspective these angles are not accurate and can't really be measured, but I still believe they show some things.
Now, the first one is from the end of the longer video. It's in the upside-down part, BTW, but you'll easily see the same thing happening in the bottom of the previous turn and on the other instants as well:
1. The ski bases are not parallel.
Is this the result of:
stance too wide
not enough tipping of the free foot
alignment (knees track to the inside)
I would have also commented an A-frame but as I believe it is a consequence rather than a cause I think we should focus on the source.
2. The skis are also not parallel. The inside ski points to the inside of the turn. The angles are very exaggerated because of the perspective, but I think it's obvious that skis are diverging. You can also see different ski base angles here. Perhaps the problems 1&2 are somehow connected.
DD, are you doing this deliberately and if yes then why? I'm asking this because I read some threads about inside ski pointing.
3. Stance leg is flexed during the turn and it looks like it extends in a transition. This is a serios of 2 instants from the same turn. The first is from the bottom of the turn just prior to the release, the second is I think in transfer phase. It would seem from this perspective that the shin-thigh angle is even smaller in the turn (around 90 degrees). Keeping in mind that the skier's stance leg is angled at this moment we could add something to this. If we add about 30 degrees then the angle approaches the one from the 2nd frame and we have the same angle during the realease as the one from the turn.
DD, again is this deliberate and why? I'm asking this because I've seen some instructors doing a demonstration to their students where they would flex during the turn and extend in the release.
Some questions:
Is the skier only relaxing his stance foot to release but not flex the stance leg?
Is the skier pushing off his old free/new stance foot?
Does the skier rise in the transition?
Does the position of hands and shoulders in 1st frame indicate that the skier's upper body rotates to the inside of the turn (that would be opposite to counter)?
Again, are all those issues somehow connected and why? I hope you all understand that this is only for the purpose of better understanding of skiing concepts and possible differences in teaching approaches. I hope to see some expert's comments on the points I raised here.