Chuck,
The bottom of that hull is an exact duplicate of my early production HTB. The early HTB hulls incorporated the same bottoms as the LeeCraft 460, with the addition of additional beam and the wide additional ride pad on the bottom of the left fork, to help keep the left side of the hull lifted in the turns. Herb was obviously utilizing the success of this style of bottom, and incorporating some of his own changes on the top deck and cowling. If the hull is true with no warpage, it should be a very competitive hull "out of the gates" with a strong engine. Looks like someone has already blueprinted the hull for you. If you decide to rig the hull and need any help, let this thread know.