Here's an example. What are you measuring? How much is the improvement? What are the results?
As an example of what I mean - take the situation of a novice or intermediate who lacks confidence to 'open up'. If one were to put them in
custom footbeds ect and tell them they are know dialed in they may gain a new sense of confidence. They feel something different on their feet and they have been told by those more advanced that they now are balanced correctly. This may give them the confidence they need to finally let it go. The results being seen on the snow may have more to do with this 'placebo' factor than any serious physical benefit. Or perhaps it is a combination of both increased confidence and stance. It is impossible to quanitify. Too many 'what ifs',
When I started the dicussion I was referring to the average skier -not the advancd or expert. Do footbeds alone really benefit them to a substantial degree. I am skeptical.