I have been using this for my swan build. Not cheap but very versatile. However come across 2 problems. The vertical holder for the body plan does not allow it to be set against the aft cant arms . My quick fix with large building blocks is temporary as the little grandchildren need them back. A stable "bridge" whereby the height of plan can be adjusted was built with some MDF leftovers. With the keel "clamps" as supplied laying the breadth plan on or under them severely limits viewing and alignment of cants and ribs. These have been temporarily exchanged for narrow substitutes. 
