Rim Chung invented the RS2 fly some forty years ago.  My friend, Ferenc Horvath, has a site devoted to Rim at www.rs2fly.com.  He features the RS2, the Plebby and the Avatar flies that Rim exclusively has used for the past forty years.  I have developed a site for Rim at www.oneflyfisherman.com.  I hope you will visit it, where you will learn about:

RS2Rim Chung

Plebby

Avatar

Rim’s Fly Fishing Method

Light Lines

Moldable Lead Weight for Nymph Fishing

Chung’s RS2 A Fishing Pearl” in the Denver Post

Rods

Reels