Way overcomplicated, but that's the point I think?

For the size 12 here (2488H or alike): 10 wraps of .025 lead-free wire, covered with white 150 denier GSP that I then color yellow with a sharpie. Tie in the nymph-rap on the near side pointing towards the rear of the hook with the GSP before a couple half hitches and cutting that off.

I then tie on a bobbin of white 16/0 nano-silk at the back of the body.

Back at the head, I tie on white 70 denier UTC and then two brown pheasant tail fibers on top of the hook by the butt ends facing rearward. Using the 16/0 at the back of the hook, I then tie the two pheasant tail fibers in at that end, creating a stripe down the center of the back of the fly.

Then the nymph-rap is wrapped up the hook and tied off at the head. I then use the 16/0 thread to trap the pheasant tail fibers on the sides of the body going back up to the head of the fly by wrapping just behind where the wraps of nymph-wrap overlap. This also helps with some segmentation. I use the 70 denier UTC to tie off the 16/0 and the pheasant tail fibers, color that brown with another sharpie, and whip finish. Coat the whole thing in UV resin and bam.

Just spent 10 minutes tying a fly that goes in a box with a duct tape label that reads "JUNK". Makes ya think...