Kayaking the Columbia River

I’m headed there in two weeks at Lincoln Rock outside Wenatchee. I’m willing to cast or flyfish fish. Any ideas on what flies or lures to use??? “You can’t catch anything if your line is not in the water”"""""

No advice for you.
It sounds like a good trip. I hope you have a blast and stay safe.

Columbia River
Be ready for lots of wind, powerboats and large waves.

I would consider salmon roe cured in borax, plugs or spinners designed for salmon. Wait until you get up there and tour some tackle shops for the local dope.