Haydenshapes 'HS' shaper fin. An all round template with longer base for exceptional speed when driving off the bottom. Overview FCS II Tri-Quad (5 fin) Shaper Fin designed by Hayden Cox from Hayden Shapes. Perfectly suited to the HS Hypto Krypto and other higher volume board models with lower rocker. 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. Board Types Designed to fit the FCS II Fin System. Perfectly suited to the HS Hypto Krypto and other higher volume board models with lower rocker Fin Family Reactor: Find Speed. Speed, tight turns & snaps. Performance Core Carbon Often referred to as PC Carbon or PCC, these fins are highly responsive and feature strategically placed carbon that’s designed to complement the fin template. PCC fins suit fast surfing and are favored by power surfers who like to perform explosive turns on critical parts of the wave.