See more of the jolly boat rocker in the builder’s gallery. jolly boat is a rocking toy boat designed to provide years of make-believe nautical adventure for the young sailor, it is an adaptation of the classic flatiron skiff, a type that generations of “old salts” remember fondly as their first “real” boat.. Welcome to spira international home-built boat plans. spira international offers a wide variety of different power, rowing, and sailing skiffs, dories, and other boat designs that are simple to build, rugged and seaworthy.. Boat plans / boat kits / boatbuilding supplies & gear. if you want to build a boat, we have what you need. chesapeake light craft is your source for boat kits, kayak kits, boat plans, and boatbuilding materials.our original, award-winning boat designs include kayaks, canoes, rowing boats, dinghies, and sailboats.more than 30,000 clc boats have been built from kits and plans..