Surf and Sea pages 120-124 2. 1989 February 4. Tom Morey, in The Australian Surfer's Journal Volume 3 No 1 Summer 2000 pages 80 - 89.
Later models allow the fin position to be adjusted.
At first fins were not universally interchangeable as each manufacturer used a different locking system, but in 1965 Tom Morey developed the TRAF system of molded fins, available to a small number of Northern California board makers. In 1966 the design was improved by the introduction of thr Wonder Bolt system, again by Tom Morey. In February 1968 Morey-Pope introduced the Waveset box and a range of molded fins for general use. This design was essentially copied by the Safe Set system.