Just under 4"
From "At Speed: Joey Cabell's Life of Precision and Controll," by Matt Warshaw; Surfer's Journal, Summer 1996
Specialized boards were key to Cabell's progress in the late '60s. The 9' 6", 18-pound Brewer pintail that he used to win the 1967 Makaha contest was a final-stage longboard compared to the V-bottoms that Nat Young and Bob McTavish were, at that moment, using in Hawaii. Cabell thought the Australian's boards looked interesting but saw right away that the thick, wide-backed tails were...