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
  Wing (Alternate): EP Trigger Point Int'l Fibers - White
  Indicator: Fulling Mill Ultra Dry Yarn - Fl. Pink
  Indicator (Alternate): EP Trigger Point Int'l Fibers - UV Pink
  Legs: Round Rubber Legs - Medium - Dark Golden Stone
  Legs (Alternate): Wapsi Round Rubber Legs - Medium - Mud Brown
  Head: Fly Tying Foam - 2mm - Tan
  Head (Alternate): Bug Foam 2MM - Tan
  Glue: Fly Tyer's Z-MentMaterials & Alternate Materials Listed Below