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Lifetime Warranty · 30-Day On-Water Trial
⭐ Rated 4.95 by 1,500+ Paddlers
Free Shipping on Orders $100+
Lifetime Warranty · 30-Day On-Water Trial
⭐ Rated 4.95 by 1,500+ Paddlers
Free Shipping on Orders $100+
Lifetime Warranty · 30-Day On-Water Trial
⭐ Rated 4.95 by 1,500+ Paddlers
3" Shallow Water Semi-Rigid Fin Fin Hydrus Board Tech

3" Shallow Water Semi-Rigid Fin

On a shallow river, you will hit bottom. When your fin catches a rock, there are two bad outcomes: the fin and box take the impact and your board is damaged, or the board stops dead and throws you forward off the nose. Paddlers call that second one supermanning. Neither is one you want.

This fin is the 4.5-inch river fin made even shorter. At 3 inches it sits as shallow as a center fin gets, for the bony, low-water lines where a deeper fin keeps dragging. The semi-rigid material bends on impact rather than catching, and the raked shape deflects off rocks instead of hooking them. Specially designed for river running, it fits the center fin box on Hala paddleboards or any board with a standard US longboard center fin box.

$ 24.00
In stock · ships within 24 hours
$ 24.00
Quick Facts

Why This One

  • 3-inch depth. Even shorter for the shallowest, bony river lines.
  • Semi-rigid material flexes on impact instead of catching.
  • Raked shape deflects off rocks rather than hooking them.
  • Compatible with any board using a standard US longboard center fin box, including Hala paddleboards.
Honest Fit

Perfect For (And Not For)

Great For
  • Shallow, bony river running where a deeper fin drags
  • Rocky or low-water conditions where your center fin keeps catching bottom
  • Any board with a standard US longboard center fin box, including Hala
  • Replacing a center fin that took a rock hit
Not Right For You If
  • Flatwater touring or racing where tracking and speed matter
  • Calm lake or ocean paddling where you want straight-line glide

Verified Reviews

Still Have Questions?

We are real paddlers. Text or DM us before you buy. We'd rather you get the right gear than make a sale.

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