Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature currently requires accessing the site using the built-in Safari browser.
There is no way to optimize a G+ Local page for a city other than the city that it's in. Your best bet would be to focus on website optimization to get some organic rankings in San Diego for the website.
There are some great tips in this thread:
http://localsearchforum.catalystema...1874-city-name-title-tag-city-youre-city.html