The Quartet could be described as a Split Keel or a Twin fin with Trailers, to form a Quad. The synergy of the larger fronts and smaller back fins work together to create a natural turning curve when pressure is applied. This design is obviously drivier than a Twin and generates a ton of speed. The fins are placed in a similar position to a Split Keel design and tend to be looser than thruster based Quads. Great for power based carves at high speed and best surfed in small to medium sized waves.