Help understand something here please Glen. I thought that the leewards should always have tension on them; not a lot, but minimal none the less. This way, in case of an abrupt transfer of heading from an abrupt wind shift or other uncontrolled event, that by having tension already on the (leeward, changing to windward) shrouds that there would be minimal transfer of "shock" load to the rig from the slack being abruptly taken up.the point where the leeward shrouds have a little slack when the sailplan is fully powered.