I always bring a full selection of flies for my annual fall (Sept) Rangeley area fishing expedition. My preferred quarry is brook trout. Shortly after filling my vest fly patch with a wide assortment of what looked good at the moment, I tie on a Hornberg, size 6 or so, and the fishing suddenly gets wicked good. Last year I caught 10 brookies on my first 10 casts with a Hornberg. It was as if the fish saw me tying on that fly and started jumping into the boat.