I read in Outdoor Life awhile back that the the non-resident DIY success rate in Montana was 3% (bull and cow). Go the first time with a guide and see how it's done. I'm hunting this year on a ranch in NW Colorado where I have seen over 600 elk in a day, private ground surrounded by semi-landlocked BLM. FYI, we hardly ever see anyone on the BLM, it's a1 mile hike to the private property line.