In 1971 our boards were still 5’4″ to 5’8″. We narrowed up the tail blocks from the wide twin fin style to the eight to ten inch range. This made the boards much more versatile, especially for quick changes of direction in the critical parts of the wave. These second generation Bonzers still had flat bottoms with some vee through the fin area.
http://bonzer5.com/media/film/71_72.flv
