Denny says: The Stillwater Nymph is as deadly as any fly I ever designed for stillwater trout. This is a highly suggestive pattern imitating a host of food sources found in lakes, especially the damsel nymph. This is the favorite of several versions I've tested extensively on lakes throughout the western states. This fly seems to work when most other patterns fail. The burnt orange hackle has a lot to do with the fly?s success. It?s best fished on a 5 or 7 foot clear sink-tip or the Camo intermediate line. Use short slow pulls when water temperatures are above 50 degrees.