Maybe this will help him be convinced to do it the RIGHT way!
http://www.katc.com/news/lafayette-s...rget-trailers/
I love how all the experts on traffic/roadway laws comeout of the woodworks! If you put it on the road and it has tail lights, it has to have a plate. If it has to have a plate, it has to have a title. If the trailer is a manufactured trailer, or one that has been repaired, it had a VIN at one time. That VIN is on the original title and you will need to do a title transfer. If the original VIN was cut off (broken trailer) and repaired, the original owner should have kept the original title. If the trailer does not have the original VIN on the trailer and you do not have access to the original title, good luck! A "homemade" trailer is just that - homemade! Without seeing pictures, if your trailer was an original trailer built by a trailer company it had a "Certificate of Origin" which matched the VIN. Without any documents, this may be a pile of scrap metal if you need to put it on the roadway. Good luck!
Also, dial *577 on your cell, and ask the local trooper working the desk to send a trooper to your address to look at the trailer. If it is able to be stamped, he can arrange it. Now, make sure you understand, this is not a priority for them, so it may take a couple days to get one there.