Sales tax, tag, and registration?

I have yet to register either of my used TCs here. Like Sidecar, first, I pay enough taxes for 3-4 people already and I all but refuse to pay tax on something that's been taxed once already. I always seem to have a spare license plate with a valid sticker. I just slap one on the camper when we use it.
And yes, if you have a loan the bank couldn't give 2 schitts whether you paid tax or not.