Re: No title for trailer
I agree with Jayhanig's suggestion, namely, buy a registered junker and just use that registration. Or, do as is often done here in New Mexico: First, make sure there are no manufacturer's tags or stamps with a serial number on the trailer. Second, do a little work on the trailer and add a fresh coat of paint. Third, take it to the DMV and register it as a homemade trailer.
Someone very near and dear to me (who shall remain nameless) has used both methods on two different trailers. In the case of the registered junker there were no numbers on the trailer he wanted to register. So, Nameless borrowed a set of stamps and stamped the number from the Junker on the top of the tongue where the people at the DMV would have no problem seeing them. The junker was cut up and hauled to the local landfill.
Registering the so called homemade trailer was a little more complicated. Nameless had to take it to the State Police for an inspection before DMV would issue a title and register it. He assumed the police would look for evidence that it really was homemade and not stolen. What they actually did was inspect it to make sure the tail, brake and signal lights worked properly. After that it was back to the DMV and it was a snap from there on.