Either license plate, easiest way is to just play it safe. Don't give a reason to be pulled over.
Check all your lights every time you connect to pull it. If over 80" wide, make sure all your clearance lights work properly. Make sure no one has borrowed your license plate, ( Has happen to me, apparently they thought they needed it more then me, or just to cheap to go get theirs registered)
Safety chains, and no bald tires.
Have fun and be safe, David