1. I would start by going to a green run and check out how he stands in his boots and see if there are any glaring issues that might suggest a boot alignment issue.
2. Look at his stance when clicked into bindings to see if the overall picture changed.
3. Maybe some video of current turns to compare/contrast at the end of the day.
4. Short discussion on what part of his foot does he feel when he skis. I would have him stand up on tip toe and feel his heels come up. I would then have him relax his ankles and feel the heel go down. I would ask him to keep light shin contact on the front of his boot but also to feel his calf touching the back of boot. I would then do some slow, round turns while having him concentrate on his whole foot keeping contact with the boot.
5. I would then have him do turns trying to get as far forward as possible and then switch to turns with weight back as far as possible so that he could develop an appreciation of the difference. I would demo the extremes so that he could see the difference in the ski performance with the change in fore/aft distribution. Have him do some easy turns while flexing knees and hips without the ankles and then play with having all of the movement start from the ankles. Again, so he can appreciate the difference in the different mechanisms. Perhaps video for later use.
6. Assuming that he was able to start developing a feel for being centered, I would discuss turning mechanisms and the concept of flattening the old outside ski to release the edge. Short discussion about the mechanics of edge release, specifically, tipping of the feet/ankles or moving the knee over the toe, or moving the hip over the ski to allow the ski to flatten. I would do some static demos and practice and then move to side slipping in a corridor which would give him practice with edge release along with adjusting fore/aft balance to stay in the corridor. (Lots of practice time)
7. I would then move to garlands across the hill with edge engagement, edge release and then to diagonal side slips into the turn. (Lots of practice time)
8. Short discussion about femur rotation and turning the whole leg, once the old outside ski is flat and starting to go down the hill. Show/do the difference between the turning movement starting from the femur as opposed to the foot. Show/do the difference between having to do something other than turn the legs if the old outside ski remains on edge. Slow turns on easy terrain. More video here. (Lots of practice time)
9. At the end of the day, review the video and discussing the differences with the different stances.
The objectives of the above are:
- Develop a centered stance so that he will be able to rotate his legs, have the pivot point be the center of the ski and have the ability to tip/untip.
- Understand and execute the concept of flexing all joints (ankle, knee and hip proportionately) so that he can adjust fore/aft balance at will.
- Understand and execute the releasing of the old outside ski so that he has the ability to turn his legs to start the turn.
- Have the tail follow the tip of the ski instead of current heel push.
- Lots of practice time on green/easy blue terrain to allow acquisition of the new movement patterns.
And then in the 2nd hour, I would..... Just kidding. The above could likely be an all day lesson.