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This fin was designed by the Campbell brothers to specifically pair with their Bonzer surfboards in order to complement the unique bottom contours and fin setups of their 3 and 5 fin designs.
The Campbells shaped this fin around the runners, not against them: the center fin and the canted runners share the load, so the board drives like a single fin with far more push behind it.
On a Bonzer-bottom board this is the engine of the system: planted, line-holding glide with far more push than a plain single fin, rewarding riders who set a line and run it. But it only makes sense paired with Bonzer runners on a Bonzer bottom — if your board is not a Bonzer, this fin has nothing to organize and a standard single or tri will serve you better.
The True Ames Bonzer center fin was designed by Malcolm and Duncan Campbell and is made in solid fiberglass. It comes in four sizes — 6.0", 6.5", 6.75", and 7.0" — all with a full base and mellow rake. It is built to run as the center fin of a Bonzer setup alongside Bonzer runners on a Bonzer-bottom board. Sizing scales with the board: 6.0" for shorter Bonzers, up toward 7.0" as length and volume climb.
The review contrasts the Bonzer's system-driven drive with the California Classic's pure noseriding pivot.
Suggested as the opposite direction for riders who want a tri that breaks loose and pivots in the pocket.
