My previous bootfitter didn't believe in heat stretching at all, thought grinding was the way to go. But my current bootfitter (I had no problems w/the other guy, I just moved) is a big proponent of stretching and doesn't even have equipment to do grinding.
Since there is such a difference of opinion, I'm guessing the matter is not nearly so clear cut as either guy suggests, but I was hoping some of the fitters here could tell me what the pros and cons of each method are.
If it matters, my next purchase will be an AT boot (if I can find one that fits!), so the shell will probably be polyurethane (that's what it says under the specs of one of the boots I'm hoping to try on, the Dynafit Titan TF-X.
Also, if it matters, my feet are wide (widest point about 3/5ths of the way btwn toe and heel), with a somewhat high instep, a tendency to pronate, and big ankle bones, which is one of the places I sometimes get pressure/pain.