Yeah I'm like a refromed smoker now, I have to tell everyone to get their boots fitted correctly!
I guess its not an easy fix, but here's what I would do,
Offer a free evaluation to anyone who wanted it. Explain the issues and importance of the fiit and allignment, Offer discounts to pass holders and other discounts based on dollars spent. guarentee the person will ski better and more comfortably (you can get away with this) Include this deal on every "new skier" package sold and bump the price $5. combine the evaluation with ski demo days and market it as ski improvement clinics, offer free group lessons for the 1st XX people.