Based on the video context provided, it seems like Lake San Vicente in San Diego, California, is a notable spot for targeting large bass. In the video "Lake Hopping With BIG Swimbaits In SoCal!" by crazybassfisher, they mention throwing swimbaits on Lake San Vicente with Captain Chris Purcell, indicating that this is a known location for big bass fishing, especially with swimbaits which are often used to target larger bass.
Additionally, San Diego Bay has been mentioned as a place where you can catch sand bass and spotted bay bass, as seen in the video "Fishing Southern California 2011" by crazybassfisher. While these may not be the largemouth bass typically targeted by freshwater anglers, they still provide a good fight and can reach impressive sizes.
If you're specifically looking for largemouth bass, Lake San Vicente is a great place to start. However, keep in mind that conditions change, and bass can be more or less active depending on the time of year, weather, and other factors. It's always a good idea to check recent fishing reports or connect with local guides for the most current information on where the big bass are biting in San Diego.