I have been developing this fly around 15 years. It absolutely kills in 3 scenarios: crystal clear water, during a caddis hatch, and with stockies. but, it pretty much works everywhere all the time. it’s my goto fly. It is a must have fly for the Upper Kern River where the big kern river rainbows cannot resist the flash in crystal clear water. but, all those monsters i have nailed in the Blue River succumbed to this fly also. It fishes well all year long in many conditions because it is an attractor, yet looks like a caddis nymph.
The story behind this fly goes back about 20 years. i purposely took a speaking gig at an msft conf in billings, MT. no one else wanted to do it. because, i had never fished the bighorn. in the audience was a fly fisherman named Brad Pascoe. i mentioned to the montana audience that i had alterior motives and that i planned to fly fish the big horn the next morning. Brad introduced himself after my tech presentation and offered to take me. he was killing; i was not. he said, “let me switch you to this fly”. it was this green wired nymph and i started killing with it. but, this is long before i had studied water born bugs so for years i called it the “Pascoe Montana Midge”. It wasn’t until years later that i said to myself, “wait a minute…that’s not a midge…it’s a caddis nymph imitation.
over the years i have developed a variation with it to include a holographic wing case and i also tie it will holographic stunted wings to imitate a cripple. it has UV dubbing in it too. it basically glows under water and under sunny skies the fish just don’t miss it going by.