I'm headed for Chinook Again in a few days and am looking for some advice.

I have heard of people hammering the salmon down there trolling with spinners.Could any of you guys give me some advice on using this method down there.
I've fished the mouth of the Cow with success trolling spinners but never the lower Columbia.
Can you run them behind a diver,or use a banana weight or dropper or what?
What size weights and length leaders do you use?
What kind of spinners and what colors for certain situations?
I would really like to try fishing this way.So any advice I can get from you guys would be greatly appreciated.The more detailed the better.

Thanks for any help you are willing to offer
Rick