We race keel boats around the cans every weekend and were fed up of getting the spinnaker launch on the wrong side. Wotac solves the problem. Dial in the course and the wind and Wottac reliable tells you which side to launch ,no more indecision. The added advantage it will also predict how shy the run/reach is which enables you to use the correct spinnaker .Seconds count on race day and this little device can save you minutes
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