Thanks for posting this, Bart! It's good to see Shane again. Please give him my best.
I would like to share some comments if I could, and hope Shane appreciates them in the spirit in which they are given.
The pieces are all there. What's lacking is getting the parts to work together properly. Shane is young, and so shows a youthful interpretation of athleticism. He probably just went through that final body change (growth and physical maturity), and so is trying to get all his new body parts working in synchrony. Right now they're all sort of doing their own thing. What's needed is "essential synergy." That's when the movement of the whole is greater than the sum of the parts.
I'll pick a few things I see which illustrate the concept.
- Freeze-frame his turns. You'll note that the front foot completes its turn before the body rotates half of the full turn. That shouldn't happen. The navel and the turning foot should move as one. When he plants that back foot pivot into the new front foot position, the navel should have rotated exactly 90 degrees. Have him do just that move back and forth and back and forth until he feels the connectivity between his foot and his center. The same goes for his stepping, by the way. The center should move in perfect synchrony with the foot. You shouldn't see a foot move and then the body catching up with it a fraction of a second later.
- Check the posture. His upper body is flexed quite well, showing off his his six pack and his lean build. However it's flexed to the point that his arms can't quite take advantage of anything his legs are doing. Note the extreme thoracic kyphosis (look that one up). Rather than the spine having a "C" appearance from neck to tail bone (when viewed from the side), it should have an ever so subtle "S" appearance.
There should be very, very slight lumbar lordosis and thoracic kyphosis. In Sanchin we seek (at first) to minimize these two sways. But whatever the degree of the sway, the kyphosis shouldn't exceed the lordosis. This is a more natural "athletic" posture that'll make it possible for him to generate arm power with his legs when he gets a more advanced understanding of sanchin and the potential of core energy.
This is really subtle stuff and takes some working, but getting this right will give him the potential to be a superstar later on. He shows a lot of promise. A few tweaks will create the potential for bigger leaps later on.
I'd be happy to work with him one-on-one to help him with these details. If you get it, then by all means run with him on it.
By the way, I think your testing of his Sanchin is spot on. Just the right amount of checking and stressing.
Anyhow thanks so very much to Shane for putting himself out there. You should be very proud. He's come a long way, and we all expect great things from him.