Future Fins Seaworthy Lost Controller Quad Surfboard Fin Set Honeycomb The Seaworthy is a Quad Fin set designed by ...Lost shaper Matt Biolos Developed for use in his small wave boards. Compared to its counterpart, the Controller, the Seaworthy is smaller in area and made of honeycomb materials, reducing weight and increasing flex. Yields a more performance minded skatey feel, while maximum drive and control is maintained. RIDER SIZE Large (180lb+) (80kg+)