I know this is an old thread, but I just came across it.
I have fished several pretty small creeks where my fly of choice (especially in the summer), is a "mini-muddler." It's just a streamlined muddler minnow, tied on a light wire, long shank hook with a body of dubbed hare's ear instead of tinsel. Add no weight, and keep it a bit sparse. I tied these in numbers 12 and 14 sizes.
When you tie on a fresh one, grease it up with your favorite preparation, and fish it dry. It will pass for a hopper or big caddis. As it gets soggy, dry it on the false cast, then "pop" it under the water surface after a short drift in the film, especially against the cutbacks. When it's good and wet, cast upstream to make it sink, then wet fly swing into the better looking holes and shadowy water. As the line comes tight, strip it back for a couple of feet before you pick it up again.
It's a darn good and reliable producer on the smaller Western freestone waters. Jim...