Stitch and glue ply this is normally restricted to cartop and trailable boats, where ply thickness of up to around 6 mm can be used. for the smaller. Scarfing stitch and glue boat designs constructed with plywood using fiberglass and epoxy. build sailboats, powerboats, cabin cruisers, daysailers, rowboats’ skiffs. Fast-g stitch and glue plywood this quick and easy boatbuilding method consists of plywood planking panels cut to shape from full-size patterns which are.