Cecil,
I have tried every type of pellet fly that has been suggested on this board - cork, foam, and fish pellets in panty hose that you previously recommended. All produced very limited results but the panty hose did outperform the others.
The absolute best recommendation came from Bruce Conello with his "PomPom" fly.
The first time I used them I caught blue gill, LMB, HSB, and channel catfish to six pounds...!
I did cheat however - I store them in zip-lock bags with crushed AQMX 600......
I yield to Bruce for further description.