I normally camphost in that area. I find that Brookies are more and more taking over Cutthroat habitat. 10 years ago, I very seldom used to catch a Brookie ,in the The Clarks Fork of the Yellowstone, on the other side of the Pass, now its becoming 1/2 and 1/2 Brookies and Cutts. I doubt though that keeping non-natives will make a real impact on the total problem.