Fishing for steelhead has slowed down due to the cooler temperatures that have arrived this week. Water temperatures are in the mid to high 30’s around Challis. You are going to have to bump them on the nose to get a bite for now. Try using larger,darker flies to get their attention and fish deep, either with a long leader and some weight, or a sink tip line.
For casting or spinning, jigs and bouncing shrimp probably will work best for bait, and drifting flies like a big Green Butt Skunk or a Rabbit Leech ig you don’t want to use bait.
Just put on the warm woollys , dress warm,and hit the river before the ice starts !