VISIBLE forward progress at the grand-prix level our sport is defined exclusively by speed records and foiling appendages, but meaningful innovation can also enter the scene in an unassuming manner. Small modifications aggregate over time and, when you take a step back, you realize that the system bears little resemblance to its former self. This is certainly the case with modern-day headsail trimming systems. What was once a metal track running along the sheerline for sheeting low-aspect, stretch-prone headsails is now typically a floating low-friction ring with three-dimensional controls for trimming high-aspect, high-modulus headsails.
Walk the docks of an ORC regatta, a one-design championship, or even a beercan race and you will notice how many boats are now equipped with some version of a floating headsail lead. With the broadened range of lead positioning available and the ability to make fine adjustments, knowledgeable trimmers can contribute substantial performance gains to any boat they step onto. Understanding the proper balance of foot depth and leech twist to achieve target performance numbers is, of course, the first step toward accessing these new gears. But knowing when to stray from the perfect setup in order to power through asymmetric chop, hold a tight lane off the start line, split low and fast out of a crowded leeward mark, or extend from a closely trailing boat on the offset leg will set you apart from the crowd of average trimmers. Let's take a look at each axis of lead positioning and its effect on the sail.
FORE AND AFT: OPTIMIZING THE LONGITUDINAL JIB-LEAD POSITION
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