a good breathable light weight rain suit will do fine.as for boots a cofertable pair of rubber knee high boots you will do alot of walking.i used irish setters.for the most part regular leather boots would do fine but you will also be in some very damp areas.if your in a bog up there they have a saying as far as stepping in mud.if its brown your going down,if its black your not comming back.
I'm heading up there in 2015 and have been doing some research, from what I've read you want to stick with rubber boots don't get neoprene boots because there are a lot of sticks in the bogs that can puncture the neoprene boots.
What does "gauge" mean anyway? As used here gauge means the number of round lead balls the same diameter as the inside of the barrel (aka the bore) that it would take to weigh one pound. It takes 12 lead balls the same diameter as a 12 gauge barrel to weigh a pound. The smaller 20 gauge would require 20 balls of that barrel diameter. The larger bore 12 gauge would require 12 lead balls of the bore diameter to weigh one pound.
In general the number of pellets in a shotgun shell...