Fcs Mens L Teal Al Merrick's template is designed for radical, progressive surfing. The raked side fins produce exceptional speed and drive, while the smaller centre fin offers quick release through turns. FCS II AM PC Large Tri Fins. Three piece thruster fin setup. Signature Al Merrick template. Versatile RTM construction delivers a consistent feel similar to a traditional fiberglass fin, but with the advantage of reduced weight. The stiff flex pattern extends progressively from the base