When I started this thread a week or so ago, I said I'd give some of the ideas a whack and report back. Did that today, finally, and thought I'd pass along the little I learned.
My son and I fished the bombing range area along Whidbey, and the chums were fairly thick-- at least we could see them jumping in a large area. The fish were fairly close to shore and seemed to be withing 200 yards or so of the beach to right in the surf. There were possibly a dozen folks casting from the beach.
Didn't see any fish caught, but we ended up with two. One was a chum, and the other was a silver that looked to be a chum at first until I opened him up.
We basically trolled although we did a little bit of casting. Both fish were taken off downriggers set at 25 feet and on a moderately slow troll. The chum was taken on a green with silver mylar Coyote flasher followed by a two-hook leader tied with fluorescent pink Mustads and a strip of pink yarn on the front hook.
I tied a small pink corkie between the two hooks, and the entire package was probably three inches long.
The silver was caught on the rod using a smaller white flasher with a small pink hootchie in front of two blue hooks.
Tomorrow we'll probably head out there again and give the bait a shot. I thought we could net small herring on our way over, but bait balls were non-existent today. I'm taking frozen stuff tomorrow and will try the slow mooching technique.