Precise and active sail trim is the final-percentage difference in maximizing your boatspeed advantage on the racecourse. Harken’s new Zircon range of blocks use a ceramic race and ceramic ball bearings to achieve a better feel for a light-air trim and heavy-air efficiency. This is a true trimmer’s block, says Matt Schmidt, of Harken Inc., the global leader in performance sailboat hardware. After months of R&D, world champion sailor Ravi Parent confirms his Zircons make him faster and shares how he integrates Zircon blocks into the precision sail-trim systems of his high-performance crafts.