yorkie-miki, all the southern CA beaches (all of CA for that matter) are sanded in now. I mean, on the inter-tidal wet sand zone. There hasn't been any large swells or on-shore winds or storms. So most all the wet sand is going to be "sterile" right about now (unless some subtle movement is occurring perhaps somewhere). So I'm afraid you're going to be relegated to the dry sand for now.
Personally I detest dry sand hunting. Because you almost never get anything old, and because the finds are just randomly placed. Contrast to post storm erosion detecting, and you can dig 100's of targets from an area the size of your living room, as fast as you can dig. Once you've been in conditions like that, trust me: You'll never go back to dry sand hunting again! haha
There's a fellow in So. CA right now who's getting lots of silver coins (albeit just '40s/50s losses) from the dry sand. He found select zones where hard-pack/bedrock is within reach. But to get to them, he's got to use a super powered pulse machine, which can get coins down to 1.5 ft. deep! And at depths like that, he's pulling up silver dimes, quarters, a few halves, some jewelry, etc.... But it's only on select areas that weren't subject to past fill sand. Because in the 1940s and '50s, the army corps of engineers went along the coast there and make a bunch of jettys, breakwaters, harbors, etc... right? And that had the effect of backing up sand at certain beaches. Such that now, even major storms (of the caliber of the 1982-83 storms, for instance) didn't reach back that far anymore. Hence the dry sand sort of became "frozen" at that time. But it's only in select areas, at select beaches, and you've got to go wickedly deep to get that silver . And, of course, be willing to chase foot deep bobby pins, etc...
