Ah, yes. We had a brood hatch here a few years ago, and I developed a few variations. Alas, they didn't appear heavily in my immediate area, and I ended up with a flybox full of big ol' bugs 17 years from their next potential use. Rather than waste them, I tried them on largemouth bass with half-decent results.
I assume you don't want to get into the business of making foam lures, for which I applaud you. My ties are made with deer or elk hair. I came up with them before I read anything by Chauncey Lively, but I'm flattered when people compare these ties to his, since he was a genius at developing innovative and practical flies with natural materials. Here's my process:
When most people use deer or elk hair for a large fly they spin it and trim it to shape. I have found a less time-consuming way of getting all that hair on the hook and achieving what I think is a better effect.
The pattern uses a variation of a technique I learned for tying grasshopper and beetle bodies. It involves tying in a large tuft of hair in one place, then wrapping the thread forward (on the hook, not over the hair), and binding down the same tuft in a different place, and so on, thus binding the hair lengthwise on the hook in segments. Doubling hair back on itself can be an effective way of adding bulk, but I've found it is easiest to just make sure that the first tuft you tie in is thick enough at the tie-in point to account for the entire girth of the cicada (obviously, this large clump should be tied in several, smaller clumps at the same tie-in point). Tying in this much hair at one point calms down the splaying effect that occurs when tying hair directly on the hook shank. When the body is tied this way, mounting wings without having them splaying everywhere (as occurs with spun bodies) is easy. Legs can be made quite easily by picking out some strands of hair anywhere you want them. If you want a flatter profile, tie in a toothpick on either side of the hook before you do anything else (this will also help keep the body from riding around the hook). I've tied these in two ways:
1) (The hard way) Tie the entire fly using the above technique, resulting in a strikingly realistic segmented body. By using burnt orange hair and black thread, you can achieve the band pattern on the naturals. If the orange is too bright, use a brown permanent marker to make it more subtle when finished with the tying. The trouble with doing the entire fly this way is that it is very time-consuming, even after you've gotten the hang of it. But the fly looks awesome, even if the fish couldn't care less.
2) (The easy way) Tie in the original tuft of hair just forward of the middle of the hook, leaving the hair long enough toward the front to finish the fly with the technique described above, and leaving the rest of the length of hair shooting out off the back of the hook. Tie in some black bucktail (not deer hair) on the top (sparsely) for a wing (leave it long in front and just tie it in with everything else in the next step). Tie the front of the fly by binding the tuft in one or two segments to form the thorax and head. Then just tie off the fly and trim the excess hair sticking out over the eye (not too cleanly, though - leave it a little scraggly). Now deal with the huge tuft sticking off the back of the fly, which will become the abdomen with some trimming: Trim it to the proper shape, leaving a few strands of burnt orange on the top untrimmed to accent the black in the wing. Trim the wing to shape, marker the trimmed abdomen, thorax, and head with brown and black if you want, and you're done. This method is far faster than spinning the entire body and achieves (I think) a more natural silouette. It also makes tying in a wing simple. I think that this may be a technique easily applied to hoppers or other surface flies as well.
How do I post pictures, Jason? (Sorry, I know you've gone over this many times...)
-Shawn