mystery3Your other good option is seeking out a shop whatever mountain you go to and setup a fitting in advance.
If you don't have access to a local boot-fitter, this is really the next best option.
Trying on boots at home or in the local shop on your own will rarely be successful. 9/10 you will buy the wrong thing for you (usually too big of a boot). You really need someone to examine your foot and then find the right shape boot for your needs. If you can't do it locally, get to the mountain shop early in the season and get a boot then.