There are many designs and plans for building boats from one sheet of plywood. here are some designs and links to free one sheet boat plans. 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. Starting with the same two sheets of plywood as for the cheap canoe, we designed a longer and wider canoe. to tell the whole truth, you need another 1/4 of a sheet.