Bubbletrubble
Contributor
@DandyDon: Those are two very good take-away points. Often times when the surf is high, the vis underwater is crappy.1: If it's a bad surf day, don't go in.
2: If the surf is too much for a safe exit, don't. Pop your SMBs and wait for help.
There are a few dive sites here in San Diego notorious for having big surf that can break quite close to shore if conditions are just right. When diving those sites, it's good to consider alternative exit points in pre-dive planning, since there are nearby areas that can offer more shelter from waves/surf.
In case anyone is interested and happens to be in the San Diego area, the San Diego Council of Divers (in conjunction with the San Diego Lifeguards) sponsors a summer program called Rocks, Rips, and Reefs (3Rs). The program schedules an event at a local dive site every other Saturday morning at 8am. Essentially, the program is an in-water "class" geared towards snorkelers and divers -- teaching them how to read the surf and enter/exit the water safely. During a typical 3Rs session, the head lifeguard gives a short talk on the site, points out hazards, gives a crash course on reading/working with water movement (surf, rips, longshore currents), discusses tidal considerations, and recommends the best entry and exit points. He also tells a lot of fun stories about rescues they've made over the years. Then each participant zips up his/her wetsuit, grabs mask/fins/snorkel, and enters the water. The rest of the session is a snorkel tour of the site. A nice touch is that safety divers with rescue floats are around to help out any snorkelers who are struggling in the water. I can't think of a better, safer way to get introduced to San Diego diving. Afterwards, one of the local dive clubs provides drinks and sweet treats to the group. And one of the best things about the experience...is that it's free! The 3Rs at Goldfish Point/La Jolla Caves is my favorite. Koch's Crack is fun to enter when the conditions are right. You could practically have a private picnic inside.
There have been a number of shore dives where I've been put in a position to exit in very active surf. In those cases, one of the best ways to get through the waves is to kind of "catch" a wave, i.e., kick hard as the wave is cresting. It can be a fun ride if you're used to bodysurfing or bodyboarding. (Note: I would not do this at an unfamiliar dive site or an exit point with a steep drop-off near the water's edge, rocky outcroppings nearby, etc.)