I've been hunting high country blacktail/benchlegs on the Western slope in September, but haven't managed to seal the deal yet.
My approach has been to start from known mid-elevation rut areas. Work my way uphill towards likely bedding areas, following natural funnels created by the terrain. Once I'm in the alpine, I look for nearby benches and basins offering shade. Glassing these areas extensively in June/July has revealed a number of bucks.
What I'd appreciate advice on is how to close the distance for a shot... Stationary ground hunting near shade has been fruitless for me so far, and many of the basins I've found offer limited approaches due to their steepness.