Copper John was Created by John Barr in Colorado. Copper John is the most versatile nymph pattern fly that imitates mayflies and stoneflies. They are popular during bug hatch during Spring, Summer and Fall seasons. This is the most popular and versatile fly that everyone should have in their box. This fly will catch fish all over the world. You can catch not only trout, but also panfish, sunfish, steelhead and bass with this fly. Great fly to fall back when nothing else seem to work. Good old Faithful fly to have in your box.
The technique to fish this fly pattern is to let it float the dead drift and swing it up at the end of the drift. Make sure you have appropriate weight to make sure the fly drifts where fish can see it. The faster water the more weight and depth is required to be effective.
Typical sizes range between 10- 22 hook size.