Easy to build? In 1979 I built a complete set of hulls over three weekends, and the hardware, mast, sails etc, are also "small" and as cheap as you can get. They cerainly aren't "rocket science", but a great fun little machine that gives great satisfaction to sail (and race) and they are light enough that one person can "roof rack" them by themselves (without getting a hernia). We bought two of them a few years ago for an association as a "trainer" for members of that associations kids and we picked up both of them for A$500.00 (A$250.00 ea) second hand. Rigging and derigging takes about 15 minutes (if you don't rush it)