I just don't see how limiting the O2 you get during training will help for hunting. I seem to recall that professionals were shifting to workouts at low elevations to get the most out of a workout and sleep in a chamber simulating high elevation to get the red blood cell benefits. Best of both worlds. In my opinion, you want good workouts to build better muscle and endurance. Once you get to the mtns, just adapt slowly. The stronger you are, the relatively easier the effort will be and better aerobically will make the most of what O2 you have. So, lose weight (less to haul), get stronger, and get more aerobically fit. No substitute for hauling a pack around too (stair wells work well), as there are many small muscles in the shoulders are uniquely worked by a pack, and you get stronger and more fit at the same time.
