Aptly named, this fly earned its place when I was fishing the East Walker in the middle of summer and wanted to fish a dry, despite 0 bugs coming off. A large brown trout decided the Cat Vomit was worth the effort to rise up and chow. I have repeated this multiple times over the years.

Walt knew what he was doing with this pattern. Caddis larvae carpet most trout streams across North America. Trout eat them constantly. This pattern gets down quickly and is deadly effective across California.