WOW!! Who "Sparked" this thread?

A few fly fishing clubs successfully lobbied to place selective gear rules on the Snoqualmie in the summer. So, there must have been some science to it or else it was as an experiment or a little of both. The rules still apply after, what, ten years?
The results must be successful right? Does anyone know of a published study showing that the return rate is much higher than the Sky? If it's successful then why don't they apply the rules to the entire state?