Ok, short version sold the house and went full time, did all the research set up a mail service etc, The DMV is not wanting to take it for my tag renewal. They need a physical residence within the co...
A fulltimer that doesn't own property (land), can essentially choose any state as a residence. This is our 2nd time fulltiming and we remained AZ residents as we own a house in AZ that we rent out. But the first time fulltiming, we chose South Dakota as our state of residence and went with a mail forwarding service there. Never had an issue with the SD DMV.