Tricks of the trade

[booker]

For those of you who have been there, done that, I have a somewhat simple yet, for me at least, important question to ask. Since I come from a non-CA background, my experience with this has been limited to Yakima Training Center and PLDC. When you are in a field environment, and you are, for example, doing the long range land nav course, what would be the optimal time/ instance to rest and/or change socks? I know that there are FMs that talk about this, but I was hoping to hear from the horse's mouth (so to speak).

J