Further boards are constructed using a universal fin box that allows our customers to use any traditional center fin that can be commonly found at your local surfboard or paddleboard shop. This fin box allows for riders to use aftermarket fins to tailor the board's performance to their prefererence. For example, when riding in rivers or shallow areas a shorter, flexible fin is often recommended. Whereas for long distance paddling a rider may prefer a longer, more rigid fin to improve tracking.