The polars for my boat predict an optimal downwind speed at an angle around 145° true. Does anyone know what assumptions are made in this prediction about spinnakers and whisker poles? I race non-spinnaker and often on windward-leeward courses so we are often dead downwind and the whisker pole makes a huge difference going downwind wing on wing. I am wondering if the polars take this into account. Dave
Aries 1990 C&C 34+ New London, CT
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