after additional research on this pattern, i found better instructions for tying the pontoon hopper

Pontoon Hopper

Hook - Dry fly style
Thread - Color to match
Body - Turkey quill for large hoppers - 1 1/2 inches and up;
goose quills for medium sized hoppers - 3/4 to 1 1/4 inch
Legs/Pontoons - Smaller quills from duck or other small game bird wing feathers
Feelers - Moose mane
Eyes - Black painted eyes
Paint - Main body - Apple green acrylic
Legs/pontoon - Burnt orange acrylic

If you are the creative type, you can paint the body to look like a real hopper.

It certainly is not a very durable fly and I doubt that it would survive to catch a second fish.

Additional Research - Limestone Legends by Norm Shires, Jim Gilford