I bought a pontoon boat last winter off Craigslist, everything looked proper until I went to register it into my name to find the scumbag I bought it from immediately re-titled the boat making my signed over title void! I returned the next day with a few of my co-horts and "convinced" him to return my money, a real fun experience to say the least. Shortly after I found another and this time we both went to the D.O.T. and transferred the boat into my name before he got one sheckle!! I can assume this could happen with a trailer as well.