There are fly shops in that area for a reason. For starters they can tell you current conditions, two they know what's working. Keep in mind if you buy something the info is better (doesn't have to be a 1000 sage one fly rod, 3 dry flies will suffice (or a couple sizes of what they recommend)
For the most part, information being passed along about regions 3 and 4 flows operates differently then that of region 2. There is an expectation that a little legwork is required, and info that does come in will most likely come through a pm or email. I understand you don't want to go that way for a bust, however how much effort are you willing to put in to turn your trip into a success? This isn't the Vedder, Stave, Chehalis, Norris etc. Do the legwork, you'll appreciate success a lot more and maybe even appreciate why guys have a bit of a tight lip.
I know I'm coming across as a jerk here. The Kootenays are great and everyone should head out to fly fish there at some point in their life. Just don't expect Internet hand outs once your talking beyond region 2.