Dub in some olive, black or the two mixed rabbit fur cut from rabbit strips into a wire dubbing loop and just wrap it around a hook. Most of the time I use a size 10 streamer hook but other sizes of hooks can be used as well for diffrent effects. If you like add in a little flash. Very buggy looking and lots of action with the rabbit fur motion in the water. A great fly for Browns, Bass and many other fish.
This simple fly can be used as a leech, sculpin, or a damsel fly just depending on how its fished. Jig it, strip it, work it on a full sinking line along the bottom. This simple fly caught me my largest Brown to date on a little lake down by MT ST Helens 2 years ago.