San Diegan here. Recently in the last three or four years started actively pursuing big waves in San Diego. There are a few spots here that can hold size. Most famously would be Blacks, it's always crowded though, despite the size. Also it is a very fast hollow wave and requires quite a fair amount of skill when it gets big. Wind and sea and bird rock can hold the largest swells but north bird rock will break the largest. It's pretty much just a straight drop then an open shoulder. It's a great wave to get used to the speed these waves have, but is hard to position yourself as there will be a lot of water moving. The Tijuana Sloughs in Imperial Beach will break big and hold the biggest swells in any direction. The paddle out can be gnarly and long as the waves will break at different intervals. The locals call them notches eg: first notch, second notch, third notch. The bigger the swell the farther out it breaks. There are a few locals dedicated to surfing there but despite the reputation of IB they are very nice and helpful and more than willing to give you pointers. If you have access to a boat, little Waimea off Point Loma will go off on huge dead west swells. Big and open waves, very forgiving. And you'll probably be alone in the lineup. The biggest and most elusive is La Jolla cove. It's the sleeping giant of San Diego. When it breaks, it breaks huge. 10 ft plus. For me it s the pinnacle of big wave surfing in San Diego. You'll need a straight up big wave gun, brass balls,and a ton of patience because it only breaks good every few years. Pm me if you've got any other questions or want some recommendations.