I found this fly on the "fly of the week" website and had some made up by our tiers. Here is what the designer had to say about it.
Created by Kelly Galloup
Troutsman Fly Shop, Traverse City, Michigan
"The Zoo Cougar has without a doubt been the most productive fly for really big trout I have ever fished. This fly was the first of the floating fly concept and has still been the best of the bunch. A floating fly is a fly designed to be pulled under by the sinking line, as opposed to weighting the fly. This allows the fly to be kicked and pushed by the currents when it’s not being stripped, giving the fly a very real and erratic movement." - Kelly Galloup
Fly length #2/#2 and #2/6 - 5 inches (12cm) Main hook is #2 - rear hook is a #2 or 6
Fly length #4/6 - 4 inches (10cm) Main hook is #4 - rear hook is a #6
Fly length #6/10 - 3 inches (9cm) Main hook is #6 - rear hook is a #10
These are Pro tied on sticky sharp Japanese streamer hooks. Long shank front hook, short shank rear hook.