This is a pattern that I have seen for over 20 years on old online forums in Utah. Robert Williamson is the guy who came up with this bug, and I figured I’d bring it back into my tying arsenal and give it a try. Through playing with some different techniques, I found a way to add taper into the back of the fly, and I substituted synthetics for the wing. I tie a basic one and a more complicated one with more bells and whistles called the Hoptimus Prime. Once you get the technique down it’s a very simple fly that floats high and is very durable. Tie them in different sizes and colors to match your local bugs! 
Material List
  Hook: Fulling Mill 5095 - Competition Heavyweight Black Nickel - Barbless - 8
  Hook (Alternate): Daiichi 1550 - Standard Wet Fly Hook - 8
  Thread: Semperfli Classic Waxed Thread - 6/0 - Tan
  Thread (Alternate): Danville Flat Waxed Nylon Thread - 140 Denier - Tan
  Body 1: Chicone's Fettuccine Foam - Gold
  Body 2: Chicone's Fettuccine Foam - Flesh
  Body 3: Chicone's Fettuccine Foam - Tan
  Wing: Fulling Mill Ultra Dry Yarn - White
  Indicator: Fulling Mill Ultra Dry Yarn - Fl. Pink
  Legs: Round Rubber Legs - Medium - Dark Golden Stone
  Indicator Legs: Wapsi Round Rubber Legs - Medium - Red
  Dubbing: Fulling Mill Ultra Dry Dub - Tan
  Dubbing: Fulling Mill Ultra Dry Dub - Hare's Ear
  Overwing: Bug Foam 1MM - Tan
  Glue: Loctite Gel Control Super Glue
Materials & Alternate Materials Listed Below