Balboa pier, a few tents at the foot of the pier, but ive never seen them bother anyone and seem to clean up after themselves, so to me they are not a huge problem.
The problem is our broken system that will never be fixed because the elitists dont care about poor people. Working middle class folks cant even afford a home in California. Sure, many of the homeless might be addicts or excons, but alot of them are just down on their luck and could use a hand.