The stone makes no sense, but I am sure the pictures hold a clue to explaining it. They look like Egyptian hieroglyphics to me, or maybe Masonic signs.
Elk, white tail deer, mule deer, fox, caribou and musk ox. I have never shot a moose, but have accompanied other hunters who have. I was a guide in Idaho for a few years. Very into hunting.
Use them only when you need them. Try a hunt without them, and if you are about to run out of IR, then use one. They are not necessary for every hunt using IR.