I ran into a nice older gentleman on clarks a few years back, rainy day, late in the season, getting to be about the time when the trout there have learned the major patterns from the fly index. He was fishing just up stream of me, and was having a red letter day, when he came down to leapfrog me I asked and he said it was a picket pin. Was the first time I had heard of it,after that I have kept a few in the box, have had success with them as a wet fly, and even dead drift as a nymph.