Someone correct me if I am wrong but I was under the impression that most of those small rainbow trout are actually little stealhead getting ready to head to sea. I grew up in palmer on the river accross from the park. Their hasnt been any really good trout fishin for awhile in the upper green. They at one time used to stock it with trout but stopped for awhile I never heard if they started back up. They went to just stealhead rearing. We used to have pretty good luck in the low water using just a nightcrawler with no weight. wading the river fishing the smaller holes and seems that didnt get all the attention the big holes get. I dont fish trout anymore in the river, just target stealhead I figure if I am going to catch a fish over the minumum size it probably going to be a stealhead.