Stitch-and-glue boatbuilding learn introductory and advanced modern plywood boatbuilding techniques suitable for heavy-duty boats. john harris—august 20–26. The sea island sport is clc’s response to hundreds of requests for an attractive stitch-and-glue sit-on-top. credit for the design goes to nick schade, whose. King william pine dinghy 3.4m brand new denman marine is pleased to offer this beautiful, hand crafted dinghy for sale on behalf of its owner. for more information.