Cliff notes...
I'm looking for a new ski boot.
What do you have currently? What do you want this boot to do better, and what are you working on/toward in your skiing?
I have a ___________ that I've had for ______ seasons. I'm getting coaching, and am working on ___________.
How many days a week/season are you skiing?
Who's your coach? (If i know them, I'll call them and ask for their take.) What skis are you on? Binding?
Do you have a footbed? Did you bring it with you? (Examine, check condition and fit validity... reuse, or make a new one)
Mobility check, measure, etc... find boot that meets anatomy, ability, mobility, and narrative, explain what and why as well as anticipated work needed...
A very experienced fitter will have a very good idea of a couple of boots that might fit the bill. It may seem that they arent paying attention, but if theyre asking key questions and you're answering, they're already doing the calculus.
If they arent asking questions, walk away.