[mention by Ricardo Bocao; see TSJ 31-2-121] Surfboard design first popularized by Australian pro surfer Glen Winton in 1982, just as the tri-fin was becoming a near-universal board design standard. The four-fin (or quad) was essentially a reworked version of the twin-fin, with an additional small set of fins added just behind the standard fins. It was said to combine the maneuverability of the t...

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