Again I cannot help with any locations in OC, but as far as the sharking scene goes, well by the list I don't see anything but whites coming from there, and that is with specialized techniques. As far as the structure goes I know many here look for nearby to shore reefs, I tend to just look for beaches that have very steep drop offs. Of course a nearby reef helps but I think it maximizes chances for success to make sure that the fish are gonna have plenty of water to not only swim in but lurk in and hunt. That is what they're doing when they're shallow, they're hunting, but when they happen across your bait they have hit the jackpot and have an easy meal. I've found in most of my shark spots that many beaches that yield lots of big sharks are also really hard to produce smaller fish, probably for obvious reasons. Good luck to you man, but time on the sand is the best suggestion. If you were in VC I could put you on some, I've done it for a lot of the members, but you are rather far! Good luck dude!