Insurance for full timers

I had a similar question. I am going to be living in my new trailer full-time but it will be stationary for about a year before I start traveling. I am having a hard time finding insurance that will even offer my coverage because the trailer is stationary, even though I'm keeping the wheels on.

Any suggestions? I've heard good things about Miller but I haven't had a chance to contact them yet. I would prefer Progressive because I would get a discount through my own bank (USAA) but they are denying me coverage.

Any help would be greatly appreciated! Thank you!