I got a pair of ZipFit liners last season, and the first 3-4 days skiing with them, before they were fully molded, were pretty painful. By the end of the week, though, they were excellent, and really comfortable. Putting them on first thing in the morning was still a little unpleasant, though, and the first couple of runs were not comfortable until they had warmed up.
When I next go skiing, I want to do something if possible to improve this, by warming the boots up first. I know there are things like heated boot bags around, but I don't reckon I really need one of those because the hotel I'm staying in is right by the slopes and I'm hoping I can just do something to warm the boots up in the room before setting off out (i.e., I don't need to keep them warm for very long). One simple option would be to give them a blast with a hair dryer but I'm wondering whether this would be safe or whether I risk inadvertently remoulding the liners, or worse.
Is there anyone on here who has done this before and can vouch for its safety and efficacy? Other suggestions also welcome, of course.