So, on that note, here is a quick tutorial on tying my favorite style of Czech nymph. Pardon the poor lighting in the photos... My tying lamp bulb is shot and I'm just too lazy to replace it, so the old desk lamp is all I've got.
Standard Czech Nymph
Hook: TMC C300BL Competition Hook #8-12 (#10 used in the tutorial)
Lead: .015 Lead Wire
Thread: Brown 8/0 UNI-Thread (70 Denier)
Shellback: Sow-Scud Back 1/8" Clear
Dubbing: Natural Hare's Ear blended with additional guard furs from a Hare's Mask (Just about any color will work)
Hot Spot: Sow-Scud Shrimp Pink Dubbing (Any bright color will be fine. My favorites are Pink, Orange, Chartreuse and Yellow)
Rib: 5X Monofilament Tippet
Place hook in the vise
Add 15 or so lead wraps
Start thread and advance to back
Tie in shellback and rib
Using some type of dubbing wax (I prefer Loon Swax), wax your thread and gently touch the dubbing to the thread. The wax will grab the fibers of the dubbing. Rapidly spin your bobbin clockwise until the dubbing begins to twist around the thread. This is called touch dubbing. Advance the dubbing noodle to about the 2/3 point on the shank.
Dub your hotspot and wrap the noodle forward a bit
Dub the head using the same touch dubbing technique as above. Pull the shellback forward and secure it at the eye. I usually add a quick half-hitch to ensure the scud back doesn't come loose if I hit my bobbin while ribbing the fly.
Rib the fly in even wraps ensuring to apply enough tension to give the fly the segmented look Czech nymphs are known for. Whip finish at the eye. Grab a marker (Brown Sharpie in this case) and color the front portion of the shellback. Pick out the dubbing using some Velcro or a dubbing brush. You're done!
A completed group of Czech nymphs in some of my favorite color combinations.