You can't register a trailer or motor vehicle in AZ unless you have a AZ driver license. You have to surrender your CA license to get the AZ license. No worky. Boat in AZ, but rates are going to raise soon and trailer in CA. CA has a new thing a few years ago that trailers are every 5 years now. Hope this helps a little.
Thats funny, I registered two of my vehicles in AZ and had a CA drivers license at the time. Did have a SECOND home here though.
Also, when you get a Permanent Registration in AZ, it is one fee for the lifetime. In CA, Permanent has to be paid every five years.
Guess CA DMV doesn't understand the fricken english language.