Hi Glenn,
Sailing San Diego waters is fun. San diego Bay (The Big Bay, as they call it) has a lot of interesting things to see and do. You can anchor free for up to 72 hrs at Glorieta Bay right next to Hotel Del Coronado, or at La Playa next to Pt. Loma. Oceanside Harbor, Dana Point, etc.
There is a club, Venture Yacht Club of San Diego, based out of Mission Bay. Most members have Macgregors, but I understand all are welcome. I've been considering joining them for some time now, but haven't taken the step yet. they go to Catalina a couple times each year, and also go between San Diego Bay and Oceanside Harbor.
I read the posts of So-Cal Potters
http://www.howies.net/socalpotter/, looks like a great club. Seems like a fun group and they go on a lot of intereseting trips, they look very active. Once I asked if I could go along with a Macgregor, the response was that everyone is welcome. I may check them out too.
But it wouldn't hurt to get an informal group together!
With regard to lobster hooping. Just the other day a friend suggested doing it. I've never even seen it done yet, but sounds interesting. I guess you drop a lobster hoop, a trap during the night, next day pull it up and hopefully you get lobster!