My dude has this done in November at the sports shop on the mountain, he said it worked for him. Here's what the shop did for him:
1. Heated up the liners
2. My dude first put on a thin liner sock, then a toe cap, then his boarding socks
3. Put the boots on, then tightened and cinched the boots till they could be cinched no more (not comfortable)
4. He walked around in them and stayed in them for 20 min.
The warming of the liners helped them expand a bit, and the toe cap and cinching was supposed to pack out the toe and help mold the liners to his feet. The guy in the shop that did this was for sure a reputable and well-respected guy on the mountain, otherwise my dude would probably have been a little more hesitant about doing this. Anyway, can not attest to whether or not this is an appropriate method, or if it will work for you, but it certainly bought my man just enough room in his boots to continue riding for the rest of the weekend. We went up again a couple weeks later and no complaints.
Other than that...wear your boots any chance you get to break them in!
Last edited by dharmashred; 12-09-2009 at 12:50 PM.