Sorry the reefs aren't marked with bouys. You kind of need a gps or a good fishfinder to locate them. If it wasn't for Wayne's gps it would have taking me a while to find them. The good thing is at there are multiple small reefs running parallel to the beach. Just keep an eye on your Fishfinder for them, remember they're small. Here is a link for the gps # for the Oside reef we fished.
http://www.dfg.ca.gov/marine/artificialreefs/index.asp
Good luck out there. It was some of the best structure calico fishing I have in awhile
. Hope this helps.
Ken