I usually don't lance blisters, and let them pop on their own, but this last trip one got so big I felt I had to. Doing so was more painful than leaving the blister alone, and hobbled me until the following morning.

So, when should I lance a blister, and how do I do lance blisters to enhance my mobility rather than restrict it?

I understand the root causes of blisters, but I want to collect some opinions about how best to perform this first aid task.