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This setup uses three fins of the same size, providing both stability and drive. This is a combination many amateurs appreciate so is a popular choice. They are organised in a triangular pattern, with the central fin the furthest towards the rear. Often used by professionals as well as amateurs, the thruster is popular because it works in a range of conditions. However, for amateurs it may be difficult in certain conditions as straight line surfers will experience more drag.
Common on modern board shapes, the twin setup uses two fins, as the name suggests. Many surfers choose this option as it is ‘looser’, meaning it provides more turn and movement. There are many ways to set this design up too, meaning it can be personalised for a rider’s requirements. There are two main reasons why surfers choose this setup: speed and manoeuvrability. It allows the board to turn quickly and in exactly the right place. There is also less drag because of the twin setup, increasing speed in all directions. The only problem that may arise is when the surf gets bigger and a bit rougher, making the board more difficult to control.
Another choice for surfers is the quad setup, using four fins to ride the waves. The setup is known for being fairly quick as it lets the water escape out of the back of the surfboard, reducing drag. Another factor, which may not necessarily be relevant to amateurs, is that the quad setup works well in larger conditions.