Ive only ever been guided by Brad Stubbs on Kootenay, but it was awesome. Those locals have the flies dialed in to drag around on days with cloud, sun rain and wind. It was pretty cool. I posted a link to Kootenay King Fishers fishing report below, hope it helps a bit.
http://www.kootenaykingfisher.com/fishingreports/
Have a ball!!