If the high cost of factory-built flats boats is crimping your fishing style, then build our flats flyer. you’ll get a flats boat exactly the way you want it at a. Manufacturer of shallow water, catamaran flats boat with hand laminated fiberglass hull, patented catamaran design, and self bailing. located in rosenberg, texas.. This boat is easy to build using our downloadable boat plans. our boat plans are available for instant download so you can start building right away..