Missouri does not require a title or registration for a tow dolly.
yes you can dolly a car backwards but you should follow these guides. 1) The car has a steering lock and it is engaged. 2) There is no one in the vehicle whilst being towed. 3) You have a towing...
It should be fine to pull it backwards.
check your owners manual
I'm assuming youre trying to get it onto the dolly? Try putting it in neutral and rolling it by the tire, instead of pushing from the back. Or wench