Register the rig in your domicile State. Pay your taxes as you're supposed to..:S
Trying to cheat the tax man will bring you nothing but headaches and heartaches down the road. If you're a full timer you may pick and choose your domicile state. If you're still working, that doesn't apply. We own property all over the U.S. but chose S.D. as our domicile state as we live full time in our coach. We have SD DLs, all our mail is sent there, we have bank accts there and we're registered to vote there.
If you are registering the coach out of state to avoid paying valid taxes, that's tax fraud, a felony in all 50 States....Dennis