Here is one that I have done without any pressure to catch summer runs and spring chinook and thought it would be a great tip to share with those that are avid fisherman, and a tip to get away from most fisherman.
Take a sled or driftboat up and fish from 9:00pm on fishing vortex's (the lighted lure). I have done this for 7 years now on the NF of the Lewis with no pressure. I take the sled up late and backtroll vortex's through the same way I would backtroll baitdivers and shrimp. But at night it is a little different. First you need an extra battery with a spotlight to navigate the river, second I recommend using 30lb tuff line and a little light stick that you tape to the tip of your rod so you can enhance and see the action of your vortex's. Next, as I mentioned earlier backtroll these through the same water you would fish regular plugs but also fish the softer water too. Fish that water that moves real slow and is 4-8ft deep, fish get lazy at night and tend to lay in softer water, hence the tuff line to help you see the action of your plugs better. We usually start this around the middle of june when the weather gets nice and do it through the end of august, and average 3-12 hookups a night. And one other thing we did land a adult sockeye in the lewis doing this once, green body and red head about 6 pounds, must have been a kokanee that made it below the dam and to the ocean and back???
Good luck and we will see you there!
Keith