The Fox’s Caddis Poopah is a fly designed by fly tyer and angler Tim Fox sometime in the early 1990’s for catching trout on the lower Sacramento River. The original fly has a few differences, mainly the hook (2302 TMC) and the use of UV resin to add some durability.
You can tie the fly in a number of color variations including olive/green, tan, orange, or chartreuse. Tim used vernille to create a tapered body and a pearl tinsel for the underbody. I use Ultra chenille and dark colored tinsels. Take the fly and modify it to your liking. Study