This is a version of Galloup's T n' A bunker. I used and Allen egg hook trailer hook size 4 and a 8089 size 6. Don't worry, the 8089 size 6 is a big hook.
My twist is to use laser dub for the head to add a little sparkle and some bulk. Note that I "made" the yellow laser dub by chopping up sections of sculpin wool and ice wing. Then I placed the sections on two dog brushes and rubbed them together until the wool and flash looked clean and fully blended. I can tell you my blend looks and acts just as the store bought stuff.
The original pattern has a much thinner head but I see nothing wrong with a fly that pushes some water.
If you have any questions let me know.
Oh and yellow and white is simply because I had it on the table. I've never used this combo before but I guess it could work.
One last note, since the tape started at 1 this is in fact a 4" not 5" fly.