Adjustment of the downhaul can make massive changes to your sail shape & therefore your performance. The less tension you place in the downhaul the more full your sail becomes. A full sail supplys more power but is less streamlined.
More downhaul will produce a flatter sail that in turn will have less power in light winds or at lower speed or but will be smoother through the air.
Blokart produce a performance downhaul as an add on. This allows the downhaul to be adjusted whildt on the move.
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