Fins are a fundamental part of a surfboard and have a huge impact on the feel, stability, drive and manoeuvrability of a surfboard — factors that can completely alter your surfing experience.
Surfboard fins have two main functions. They give the surfboard lateral support and brake the surfboard through resistance in the water. This means that the tail stays behind during normal surfing.
There are many fin types out there from single fins to the the most common three fin setup called the “thruster” to unique five fin surfboards called “Bonzers”; all creating a unique experience when being surfed.