Has it ever been titled? if so, was it here in Texas? If you don't have the registration numbers on the hull, look for the hull ID. It is usually stamped on the transom on the starboard side. Contact Tx Parks and Wildlife and give them that id number and they can research. If it was titled in Texas before, they will be able to tell who the last owner was. you can contact that person and ask them if they have a title on hand. If that person does not, then he will have to apply for a duplicate and then the title will be able to be transferred. It will take a little time and sometimes it will lead to dead ends so whatever it is you may be looking at buying, wait until you are sure you can title it.