You mix and match comments incorrectly ...I never said Hirscher is driving his knee in that montage. That was to show hips in front of feet. And I didn't use Bode as an example of hips in front of feet...strictly rolling of knees!
And you are incorrect on the inside knee drive, which also means you disagree with very experienced coach who also was a member of the US Olympic team!
By the time a skier exits the fall line, the shins have to be close to parallel. It is central to remember that the ski tips should be level. Excessive sagittal split, with one ski ahead of the other, does not allow the effective loading of the inside ski so that its edge is locked into the snow. If the shins are parallel and the saggital split of the skis is minimal, the skis carve the clean arcs without interfering with each other. The inside ski is always bent less and carves the arc of the greater radius. However, the skis do not cross even though their tips may get closer to each other in the final phase of the turn.
As seen in the next picture, I achieve near perfect parallel shin position in the completion phase of the turn. At this point, almost equally edged skis are positioned far from under my center of mass.
Right in this phase of the turn the maximum load is placed on the inside ski. In order to maintain a dynamically balanced position at the final phase of the turn, it is recommended to feel more pressure on the heel of the outside foot while simultaneously feeling the front of the boot. The contact between the shin of the inside leg and the tong of the boot is increased. At this point skier should clearly feel the pressure building on the outside part of the inside foot in the area of ball of the foot.
We can clearly see the above-described movement demonstrated by one of the World Cup leaders, Didier Cuche of Switzerland, while free skiing on a glacier
The movement resulting in matched shins is quite apparent.
Let’s see how these movements are applied by World Cup racers in a race course.
In this photo montage, we see a winner of a number of World Cup races, Kalle Pallander of Finland. It is easy to notice that Kalle begins the turn with less than parallel shins and not equally edged skis. In fact, the inside ski is almost flat and the inside hip is quite far from the snow (frame 1). However, in the process of making the turn (frames 2 and 3), Kalle moves inside, in the direction of center of the turn. At the same time, he moves the inside knee in toward the center of the turn, which results in increased edging of the inside ski. By the beginning of the final phase of the turn (frame 3 at the gate), Kalle matches his shins and achieves near perfect body position with skis almost equally edged. At this moment, the displacement of the body inside the turn is evident if we compare and contrast Kalle’s inside hip position in frames 1 and 3. In frame 4 the arc is practically completed and Kalle begins unlocking the edges by moving the CM forward. This movement results, again, in an unmatched position of shins, which happens because the edge of the outside ski starts getting unlocked first while more weight moves for a very short moment onto the outside edge of the inside ski.
The next montage can also serve as an example of achieving the correct position of shins and skis at the right phase of the turn:
Here we have the very promising young Swiss racer Daniel Albrieght. I suppose that it is evident from this montage that Daniel, like Pallander, strives to maintain his speed in the final phase of the turn by moving the inside knee and matching the shins.
Considering that carving an arc takes not more than 0.5 second, the movement of the knee into matched shins position has to be performed at an instinctive level. Therefore, it requires some targeted technical work and fine tuning.
First of all, it is very important that the movement is not reduced to just moving the knee, but takes place concurrently with the displacement of the body inside the turn. Just the knee movement will result in excessive edging of the inside ski or catching the edge instead of carving the final phase of the turn with both skis.
I would like to share one simple drill for developing shin matching movement. Initially, this drill should be performed at low speed on a relatively flat slope.
Using minimal inclination of the body inside the turn with a wide stance, the inside knee is moved to matching shins position and kept in this position throughout the half of an arc as demonstrated by the author in the next series of frames:
The difficulty of this drill is exaggerated by extremely wide position of the skis. It requires a certain level of balance and precise distribution of pressure between the heel of the outside foot and the ball of the inside foot. The sense of contact between the inside shin and the tong of the boot is also very important, because it allows you to keep the ski tips even.
Without keeping the tips close to an even position, it is almost impossible to engage the shovel of the inside ski, a proper movement that allows you to minimize the difference in the radiuses of the arcs carved by both skis. It is very important that, at low speed, this drill is not reduced to swinging knees from side to side as often suggested by some coaches and instructors. Such movement creates a wrong biomechanical pattern, which will have to be changed later as racer moves to higher speeds. In order to avoid it, the outside leg should be almost fully extended while doing this drill:
Preformed correctly this drill instills proper skeletal alignment used in the regular turns. While working on matching the shins with the help of this drill or just making the turns on a groomed medium slope, racers can feel that all of these movements are too simple and come way too easy. I often have to discourage these types of illusions. All it takes is to move to a steeper hill and increase speed. Then, matching the shins and a timely engagement and pressuring of the inside ski becomes a very difficult task. In the race course, the task is even more difficult. Therefore it is worth spending time working on matching the shins in free skiing as well as in the course, gradually increasing the speed and the steepness of the slope. Proper timing and symmetry on both sides have to be achieved before moving to higher speed and more difficult terrain.