Thanks, acm.

RVGolfer, do I detect a serious effort to avoid California residency? :)Or is this truly a temporary sort of thing? Under the circumstances, I think an RV might make a great deal of sense -- strengthens your claim that you're not a resident since your accomodations are completely mobile.
Don't know if you've checked into incorporating, but last year Cal waived minimum Franchise Tax Board deposits for new corps and min tax for this year. If that policy is still in play, it's a good time to incorporate. I recommend NOLO PRESS' book on how to do it.
Several reasons to do it -- in my case, the film industry treats you as an employee even when you're what would be a 1099 in any other writing industry. I get massively withheld upon. It's odd, but they treat the entire income as having been earned in either one day or one week, extrapolate that to an ungodly annual income and withhold insanely. Even with upping the exemptions, it hurts. Of course, they also do the FICA matching bit. With a corp, known as a "loan out" in the film industry, the corp gets paid. Soon as I get some time, I'm going to structure a nice matching 401K plan for myself -- the matching bit is deductible to the corp.
In your case, the corp might like to buy an RV.
Cyn