What is lapstitch construction? clc’s exclusive lapstitch™ construction . patent no. 6,142,093 . the strength of the lapstitch™ joint is such that the designs. Design software: aerohydro (marine design and modeling software and services) aerologic (lofting, simulation and analysis software) aeromarine research (tunnel boat. Intro: stich & glue plywood canoe. hi!i developed the urge to build my own canoe/kayak. it took a while to get the courage for the undertaking, and my research took.