The show that they have on the Weather Channel makes it seem like San Diego is busy all the time! lol
I have the LG TGs loaded with the PD TGs so I hear them 24x7. There are occasional emergencies that don't involve lost kids but they are few and far between. PWCs in the surf zone, minor personal injuries, alcohol or smoking violations, injured or sick sea life, strange men with cameras, etc. but not many true emergencies.
There are suicide attempts from the end of the pier and people being washed off the jetties when the swells are big but those are rare. Throw in an occasional disabled boat being blown ashore and there aren't many more code 3 LG responses.