I've never specifically targetted sea runs before... I've always gone after the salmon. Any tips on sea runs?
I've written about them a'plenty on this site. Do a search for my handle and the terms "beach" cutthroat and you'll get lots of hits.
Full disclosure: 95% of my SRC fishing off the beach is with spinning gear but the strategies are still the same. Feel free to PM if you want to chat more.
The only time I fished off the mouth of the Oyster was Aug 17, 1997 on the evening flood tide . My journal notes what fish rich environment it was. There were a number of ct jumping and a larger one that swirled the water as he chased prey. I hooked 4 ct and landed 2, one wild and one hatchery. Both about 13-14" Also landed several juvenile chinook about 6" long. So perhaps the great great grandchildren of those ct are still there!
My one truism for beach ct is that a jumping ct is a catchable ct. Always cast to a jumping ct. Case in point, that night at the Oyster, a ct jumped about 40 feet to my left. I hurried my retrieve and ripped a cast in his direction. He hit my spoon as it passed over where he had jumped moments before.