The HS 2+1 fin is unique and versatile and has been specially developed for use with the Haydenshapes Plunder model. The Plunder can be driven with only the HS 2+1 middle fin, which gives the Finn a good flow and a lot of revving pleasure during the curves. To create a little more speed, the fin can be used in the 2+1 setup, giving the board a mix of thruster feeling and classic singlefin feeling.