Cardiff can get hot, La Jolla may be more consistent, but also more crowded. There is a lot of diversity in terms of structure in between the cardiff kelp and seaside... Work outside the kelp around 90- 115 with a big greenie and eventually you will come to love Cardiff.
Bait is usually easy in between the pipe and the kelp or out deeper in 100 ft of water I always find macs on the bottom. Drag one deep and maybe you will find halibut land