There are several longtail boat workshops near Thale Noi lake. They are very characteristic wooden boats in Thailand that are named long tail boats due to their engine and the big metal rod with the propeller at the end. I put you the GPS coordinates of one of these workshops. Feel free to go inside and watch them work, even if they can only speak Thai. Tell them sawatde, hello in Thai language to greet them on arrival and they will greet you with a smile. Of course, there are stages of construction that are more interesting than others but impossible to predict what stage they will do when you go. A boat's price is 20,000 THB without the engine.