I have tab into this before. Your problem is that it was last registered in a different state, so they have to have the last registration and bill of sale. You'll have to call Tennessee, give them the TN registration numbers, or maybe the serial number. They can tell you who it was last registered to. They'll have to fax proof to the courthouse. You can then make a bill if sale to match. It has to be done this way. I've had to do it three times. I will no longer buy a boat that isn't registered currently because of it. It took me a month to get one done from Arkansas one time, and it was sold at an auction. If it was registered in Alabama, it would be a much simpler fix.