@reaper338 to tie into
@Irishrover's comment about Amato Publishings books...the creme of the crop is Spinner Fishing for Steelhead, Salmon, and Trout by fellow Oregonian Jed Davis. It's our holy grail and written from a scientific, but easy to understand approach.
I read it from cover to cover when I got the first edition, back in the 80's, and it made all the difference! Try to get a 1st or 2nd edition, if you can scare one up. So you'll have the color plate pages of his spinner designs. They are works of art in their simplicity. But made to match specific environmental conditions, all explained in detail in Jed's masterpiece.
Right after my first reading I bought the recommended gear, and tackle. Then made my own all black #3 spinners. The first time out I went to Moonshine Park on the Siletz; and went 1 for 4 on Fall Nooks below a break dam! Did you get that? I hooked FOUR nooks with BLACK spinners! You just have to learn Jed's principles for yourself.