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. This is a maine skiff being built by a couple of teenagers. construction is basic and requires a minimum of tools and materials.the single page plan. 36′ cutter juno stepping along. i built this particular one and lived aboard 4 years, back in 1976. thanks to wim netens of belgium, who retouched.