This is my Yaquina story and I am sticking to it...
I "heard" of 4 fish caught with just a few boats fishing the Riverbend and Oyster Bed area this past Friday. I went up river and checked on Saturday and saw 11 boats working the same area. Saw 2 fish roll, but never saw a net fly in about an hour of watching from the bank while the kids had their lunch.
On Sunday, we put in, jigged up a quick 5-6 dozen herring near the Marine Science Center docks and then headed up river. We fished about 2 hours with 3 other boats and never saw the net fly once. Lots and lots of grass in the water, so it made fishing difficult.
That's what I know... (If you ask my wife, that isn't much!)