2 in the Eastern Cape Division which is reported as Butt v Schultz and Another 1984 (3) SA 568 (.ECD Mr. Hugh Butt (the applicant in the Court a quo and the present respondent) is a farmer and boat builder of Kenton-on-Sea, near Port Alfred. Mr. Dennis Schultz (the respondent in the Court a quo and the present appel lant) is a boat builder of Port Alfred. During the years 1954-1978 Butt developed the design of the hull of a catamaran-type ski-boat. First he created a concrete "plug" which embodied the shape of the hull in the inverted position. From the plug he made a mould by applying to it successive layers of glass fibre reinforced plastic (commonly called "fibre glass") and resin.......