Rincon's a pretty fascinating spot. I've been there a time or two. Smells like the air you let out of tires.
Alas, it's too far for me to want to go regularly, as for me fishing becomes more about repetition which yields increasingly to convenience
https://en.wikipedia.org/wiki/Rincon_Island_(California) Reading about its purpose and history is really fun. Apparently they were shut down after a watchdog group spotted some major problems. It connects to multiple long reach oil wells, and was basically getting ready to be an ecological disaster. After being shut down, of course the company filed for bankruptcy, sticking the gov't with the bill for cleanup rather than handle it themselves.
They're in early stages of decommissioning, so now's a good time to check it out. Might not be there forever, though I'm not sure if they're just going to remove the causeway.
+1 on the access challenge. While I always recommend fishing with a buddy, it's practically a must to get your kayak over the rocks.
You're basically doing some light bouldering while carrying a kayak
Also there's a Robert Field episode where he thinks he's in Malibu, but is actually fishing Rincon.
https://www.youtube.com/watch?v=aWLkbIzEGkI Probably not a bad time of year to see if a stray WSB or few are cruising through.