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Rocker refers to the amount of curvature in the bottom of the hull along its length from bow to stern.

Paddlecraft hull with bow-to-stern rocker shape
Rockered
  • A rockered paddlecraft is easier to turn and maneuver but harder to paddle in a straight line. In general, the greater the amount of rocker, the easier you can turn the boat or paddleboard, which can be critical when paddling on white-water rivers.
Paddlecraft hull with flat (no rocker) shape
Flat (No Rocker)
  • A flat paddlecraft (no rocker) is stable and buoyant but tends to be difficult to turn.

With longer, narrower, and flatter paddlecraft, the stroke-to-glide efficiency typically increases.

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