I have been fishing one of the most heavily fished still waters on the eastern side of Washington State, and I have tied several scud patterns. Each of them has a spot in my still water box but I came up with a simple and most effective pattern ever.
What I learned about scuds is that they develop an “orange-hot-spot” caused by internal parasites. Some might refer as “pregnant spot” but the fact is “dying spot” that makes any still water trout gorge on dying scuds.
Step 2: Tie in two olive ostrich herls and make 2/5 of the body. DO NOT cut them for now. Step3: Tie in two orange ostrich herls and wrap a “hot-spot” exactly in the middle of the fly. Proportion has to be 1/5 of the body. Step 4: Wrap remained olive ostrich herls to form the front 2/5 and tie off.
How come in Step 4, I’m not palmering through the orange herls and screwing up the look?
I believe from what you say here, that you should just wrap the orange herl over the olive herl for the middle 1/5th. Then continue on with the olive herl. Doing it this way you don’t have to tie in your second dose of olive herl. So, when you finish the 1st 2/5th of olive, just lay a section of olive flat against the hook shank and wrap orange over it.
If the center is 3/5th of the entire fly, then that would leave only 1/5 olive on either end of the fly. …2/5ths…/…1/5th…/…2/5ths…= 5/5ths.
You are correct though. The third 1/5th is only a 5th of the fly, and it’s in the center. …Olive…/…Red…/…Olive…
FWIW, I was told by a guide on the Bighorn that the Ray Charles was meant to imitate a sowbug and that the bottom should be trimmed (to get the sowbug’s flat profile) while the sides should be left long.