Flying, here is a small article pertaining to your little dilemma. People who live in one state, but license their RV's in another state to avoid the sales tax are generally referred to as cheaters. California actually calls their law pertaining to this little problem as their "CHEATER" law. I remember visiting Australia in about 2005 for almost a month. I paid tourist taxes at every hotel, every restaurant, every car rental and tourist trap we visited. We were glad to do it. But the country won't run itself. A small thing like sales and use tax greases those wheels.
https://www1.avalara.com/us/en/blog/...wednesday.html