Idaho Shooter for what you were doing wool would have been a much better option! Big difference packing and hunting in the wilderness, than kicking around the briars, and going home to a warm house at the end of the day. Remember cotton kills in those conditions you subjected your self too!
Bingo! Cotton canvas is "carhartt" and it will absorb water over time. You've got to be able to dry it out overnight.
Otherwise, do wool for a natural fabric, or else GoreTex with Thinsulate (but that will need to dry a bit every night also).