I live in South County also.
The above info (go at night) is good,,,, but, I'd like to add that for those Jetties, go at night the last 3 hrs. of the outgoing.
Plus going to the end is usually better than most spots.
Lots of folks can't be bothered with fishing the full moon, and that's great advice! It leaves things much less crowded when I'm going.
This past full moon at least one of these ponds had a very good worm hatch happening. I had 2 awsome nights with schoolies on the fly in the light of the moon. Was almost like daylight.
For me, once the sun goes down and things get fairly dark,,, I'll consider the next couple hours (relatively) non-productive. Not always, but generally.
And IMHO there is only one thing better than fishing at night. That would be a damp, foggy, drizzly, overcast morning in the rocks. Living in SoCo I'm sure you know where to find rocks (and I'm not talking breachways).