Finology
Everything about this fin, explainedOverview About this fin What it is, who it suits
Ethan Ewing Signature Thruster – Fiberglass Series
Built for power, control, and consistency, the new Ethan Ewing Signature Thruster is now available in solid fiberglass construction—Ethan’s personal choice for a reliable, consistent flex pattern. Designed with precision and proven at the highest level, this fin offers unmatched stability and drive for surfers pushing their performance limits.
This model features the same trusted DHD template offered in Honeycomb, now tuned with refined foils and upgraded to fiberglass for Ethan’s flawless, drawn-out power surfing. After years of testing and refining across his quiver, Ethan has fully committed to this thruster set as his everyday go-to across the World Championship Tour.
Ridden by Ethan to three consecutive Final 5 finishes on the WSL CT, this fin set is battle-tested and proven to perform in all conditions.
"I’ve shaped my surfing around this template." – Ethan Ewing
Details:
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Template Category: Rake (drawn-out, control, drive)
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Construction: Solid Fiberglass
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Ride Number: 3.3 (Speed Control)
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Size: Large (75kgs+)
Available now at Welcome Boardstore. Push your surfing with the fin trusted by one of the world’s best.
Construction Control SeriesTraditional fiberglass
Solid fiberglass panels, CNC-cut and hand-finished. The most speed-controlling fins Futures makes, and the pick for powerful surfers who want the same feel underfoot every single wave.
Ride Number 3.3 · Speed control
Control Series spans 1–4; this fin sits at 3.3.
Indestructible
Fiberglass takes a beatingShallow reef, dry rocks, the odd close-out — fiberglass survives it. Sand out a ding or a scratch and the fin is as good as new. Nothing else in the range is this repairable.
Built for power
Ideal for heavy conditionsWhen you are taking off late and stalling for the barrel, controlling your speed is the whole game. That is what these were built for — hence the name. Heading somewhere with real power behind it? Keep a set in the quiver.
Template Rake Drawn-out, swept back
A long, drawn-out outline that holds all the way through a turn. Rake templates carve rather than snap — drive off the bottom, hold in the pocket, and the most stability of the three shapes. If you surf on rail and like long lines, this is your shape.
Specifications This fin's numbers Area, height, base, angle and foil
Ride Number 3.3 · Speed control How Futures rates every fin
Feel = Flex + Rake + Foil
Futures rates every construction on a 1–10 scale. Low numbers hold a predictable line and control your speed. High numbers generate speed and snap out of turns. Three physical properties combine to produce it, and they are not weighted equally — flex counts for the most, then rake, then foil.
Solid, engaged, predictable. Built for powerful conditions.
All-around. Drive, hold and looseness in equal measure.
Springy, fluid, responsive. Built to create speed from nothing.
Flex is how much the fin bends under load — soft generates speed, stable controls it. Rake is the sweep of the outline — upright turns tight, laid-back holds long. Foil is the cross-section — a V or V2 foil feels fluid, a flat foil feels engaged.
Sizing Which size am I? Sized to rider weight, not board length
Futures sizes fins to the surfer, not the board. Find your weight, then fine-tune with construction and template once you know your size.
XSmall / Grom
35 – 50kg
Small
45 – 60kg
Medium
55 – 80kg
Large
75kg+
The bands overlap on purpose. If you sit on a boundary, size up for more hold and drive, or down for a looser, easier-to-turn feel.
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