Mr. James Kinstle crafted one of the most comprehensive manuals ever written on surfboard design and construction. It's been out of print for ages which makes it worth it's weight in gold. This rare gem is truly a must have for the complete surf library. It's filled with excellent diagrams of planing shapes and types of waves. If you plan to build a board or just want to know more about board hydrodynamics this is indispensable reading. It's purely brilliant. We only have one copy so if you need it call or email us.