FCS II Hayden Shapes Tri Surfboard Fins - Large/WhiteHaydenshapes 'HS' shaper fin. An all around template with a longer base for exceptional speed when driving off the bottom. Overview FCS II HS Shaper Fin was designed by Hayden Cox from Hayden Shapes. Perfectly suited to the HS Hypto Krypto and other higher volume board models with lower rockers. This fin produces exceptional speed when driving off the bottom, especially on longer open face waves. Ideal Conditions A wide range of conditions, and waves.