Carl says, "This nymph was designed for the South Platte River in Colorado. Mainly the Cheeseman Canyon section. The fly works great anywhere you find golden stone nymphs. I typically fish this nymph as a upper fly on a 2 fly nymph rig, or I will fish it as the middle fly on a 3 fly nymph rig. It can also be fished by dead drifting, bouncing along the bottom." You can find the fly tied commercially by Montana Fly Company, and in many quality fly shops.