Loading... Please wait...The best selling nymph pattern in the country? That's what we hear. You just know the reason is that people are out there catching fish on them. In fact, the first time I was introduced to the Copper John, it was watching a guy out-fish me by about 10-to-1. You can bet I tied one on in record time after watching his show. The Copper John is a very effective pattern that sinks like a rock, has a nice bit of flash in it's epoxy-coated wing case, and a bit of sheen to it from the wire abdomen. Join the Copper John revolution. Fly pictured is size 14.