Rattle and hum! This is a basic zonker fly with a twist. The fat belly on this version hides a glass tube with metal rattles inside. Works great in some situations: Night fishing, low light conditions and stained water.
See more on zonkers and rabbit strip flies on this blog: https://michaeljensens.com/angling/?p=1933
And watch Zonkers under water in this video: https://www.youtube.com/watch?v=nsb3igOStZk