It seems clear from your participation and contributions with Epic website and events and your own website (www.snowind.com
) that you are someone who wants to demystify alignment for skiers. Along that line I will step up on a soapbox for a moment.
Personally, I think that skiers should understand alignment well enough to understand approaches for making footbeds, adjusting ramp angle, adjusting forward lean, cuff adjustment, both internal and external canting, and binding mount location. Bootfitters and alignment specialist use very different "models" in helping a skier set up these various parameters. I believe that it is extremely helpful for a skier to at least understand (if not explore) these various models.
Out of this point of view has developed my tendency to want to take control of alignment for myself. Unfortunately, there is not a simple way to do this given the current state of ski technology. That's one of the reasons I was willing to try the SBS system even though I was skeptical. Mosh's SBS approach allows for home assessment (although his shop assessment system is much easier to use and more accurate), relatively inexpensive, do-it-yourself changes in the degree of cant you employ, and total reversibility.
Thanks to my reading I am well aware that in trying to use internal canting I've changed my ankle/foot alignment so I am on the lookout for effects (negative and positive) from this. I also have the ability to check knee tracking at home to see how much change there's been from this internal canting and then think about whether I want to still employ some external boot sole canting based on both at-home testing and on-hill testing with temporary wedges on-slope. I haven't got to the at-home re-evaluation yet but I hope to before I store my boots and skis for the summer.
I think it would be great to put together a full review of alignment methods and models, although who would have the time and energy to do this, I wonder? You use a pretty traditional, well established (I would also think very effective) approach in your alignment procedures, including, it seems, some novel things you've developed for yourself. Harb also uses a fairly traditional approach in terms of boot canting but, in his making of footbeds, includes measurements of foot and ankle movement ranges in order to maximize someone's use of their range of motion. He also believes in some footbed compliance to permit some foot movement for tipping. Mosh uses a pretty simple model and a unique evaluation system (for measuring foot balance) that is in at least partial conflict with a number of approaches used in footbed/posting/bootplate setup but from which he seems to get pretty good results. Steve Bagley (Snowbird) uses a Tekscan pressure evaluation system to set up footbeds and boot cuff alignment and claims he can usually get someone well balanced between those two (to my understanding). He also offers a Campbell balancer for setting binding mount location (certainly related to alignment and balancing for/aft balance and ski control).
My apologies if I have inaccurately represented some of these approaches but the point I am trying to make is about the diversity of approaches out there. I don't think the information is easily available to skiers to simply understand the basis for these varied approaches and I think that a proper review of these would be an important step. Without such an understanding I think it is much less likely that a skier can find good alignment for themselves, having to rely (and pay) an expert to do it for them, usually without a lot of the skier's input. While this certainly can work, the alternative of a skier working hand-in-hand with an alignment specialist (or doing it on their own if more appropriate technology were available) seems like the better way.