J/30 Class Association Forums J/30 Forum The Boat, Sails and Equipment weather helm

Yes, with only main, the center of effort moves way aft. Compare 2 configurations. One is full main and #1 genoa, the second is a #3 jib and full main. The center of effort of the #1 is aft of the center of effort of the #3, creating more weather helm. This logic falls apart if the jib becomes too small, but I think it works for conventional inventories with nearly full hoist headsails.