I'm glad to see your going on a real Caribou hunt in Sept. We did that hunt a few years ago, I like it better than the Dec. drive up yourself and shoot them from the road. Good Rain Gear is a must, also take good optics , the only scopes that didn't fog up were Leupold's, Take some fishing gear as well, we got a few days of fishing in as well. Don't shoot the first Bull you see, they all look big. LOL