The Metolius River has generally been good fishing on nymphs, and hit or miss on dries. The ever so distinguished orange bead head egg continues to be the best, but plenty of good fish are being caught on October caddis pupa and perdigons. 
Overall, streamer action for bull trout has been slow with moments of glory. The Milk Shake, Purple/Black Articulated and White Circus Peanut are our top 3 choices for now. Don’t hesitate to fish the Milk Shake under a large Oros indicator and dead drift it. You can control the depth and speed of that better than on a swung fly and some days that’s what is needed to get a bull to turn on it and eat. Work a BT run with a nymph, a dead drifted streamer and a swung streamer. 
If you do get lucky enough for a dry fly moment, expect the hatch to be a #18 or #20 Blue Wing Olive and possibly add some #20 to #24 midges to the dry fly box for the next few weeks. Emergers, Cripples and Adults will be needed so get tying or stop by FFP on the way to the river and get some Pliva’s, Film Critics, Knock Down Duns and Sparkle Duns for sure, and add a CDC Parachute to the box for a high riding dun pattern.