Such a simple fly but one I've not tried before. I have never had much luck with dry caddis patterns, they've been more of a chance it method rather than being the fly to use. I did witness a caddis hatch this year, though the fish were taking to ascending pupa rather than the adult I was pleased to actually see a proper hatch. Most of this really does boil down to my fishing times being of a social nature. I rarely fish late. I'm too considerate to my partner, it would be unfair to fish into darkness and leave bedtime duties solely to her. Despite all this it would be foolish to not have any adult caddis patterns in your box. This is one I have now added to mine, I'll make an effort to use it when I can.