by the way, there are now only 2 boats a day each way from Satun Tammalung pier...they stopped one for Ramadan and have discontinued permenantly. They fill up early...the koh lipe ferry is full over a day in advance and when youre coming from Satun for the 10am...get here before 9.30am or they wont sell you a ticket...
you could go to the local amphur office and get a yellow book...its like the tabian baan that thais have. Go talk to the local amphur office and take your wife and any neighbour who knows you well as a witness...Im sure they will sort you out :-)
its very simple and painless. I simply got my lease agreement translated...got the new passport back in 2 weeks. Many translation services on Trendy on soi13