A few years back Gov. Rick Perry was ridiculed for making a TV commercial welcoming businesses to Texas from California. The implied message was, "Thank you California for being insane, we appreciate the business here in Texas."
When companies or individuals move from CA to TX they immediately get a raise in the form of less taxes. I'd be in favor of taking that one step further. Offer people a cash bonus to relocate. Green cash, not a credit, but cold hard cash. Not only would they get their automatic raise just for a lower tax burden, but a cash bonus over and above the raise. (Notice I didn't include companies in this cash plan, they get their bonus in other ways.)
Sure it would cost a few taxpayer dollars but it's probably cheaper than running TV ads. Plus you get to poke California with a stick, and that's priceless.