If you can find out where they camp, that will help. The forest service issues their camp permit, so they should be able to tell you where, if you can get passed the receptionist. I've found out, had to push hard, but they did tell me. Then I avoid them more easily.
Most outfitters try to pad the experience with great food and cooking, which can be your advantage as they will be in camp more waiting for chow. They'll be eating bacon and eggs, apple pie, ribeyes, and drinking whiskey, while you are glassing.
We met one guide headed off the mountain in Wyoming last fall an hour before dark. He poked fun at us camped in little tents on the mountain eating cold food saying "we have a hot supper waiting for us".
"Hope you enjoy it, as you aren't going to shoot a buck at camp 2000' feet down the mountain", I thought.
If I could have got his client alone, I would have told him he's paying $4000 bucks for a good meal, as he wasn't hunting for sure...