FCS II Al Merrick Tri-Quad FinsFCS II Al Merrick Tri Quad Fins Al Merrick's template is designed for radical, progressive surfing. The raked side fins produce exceptional speed and drive, while the smaller centre fin on the medium and large template offer quick release through turns. Updated PC construction featuring ultralight AirCore. Tri Quad (5 fin set). Ideal Conditions Hollow steep waves, punchy beach breaks. Board Types Designed to fit the FCS II Fin System. Performance