Likely if you can find a jetty you can find bottom fish, flounder may be present though that is speculative as I am basing that off Oregon and definitely Sea Perch or Surf Perch. http://www.sschapterpsa.com/ramblin...ishing.htm
Basically anything you can find living in the area you are in makes a good bait: clams, sand shrimp, fleas, blood worms, herring, sardines and other bait fish.
I am going out tomorrow to Florence, OR to fish for flounder and rock fish inside the jetty/tidewater while crabbing. From what I have been able to find on rigging the best bet is a fish finder rig with whatever bait you decide on, which is basically:
I'll be fishing in the area this webcam aims at:http://www.lanecounty.org/webcams/harborvista/HarborVista.aspx
Probably on the ocean side of the channel near the rocks and flat sandy bottom.