If the majority of your sail appears to be properly trimmed but just the
leach flutters you tighten that "leach line" a bit to stop the fluttering.

"Steve Daniels, Seek of Spam" wrote in message
...


I noticed my genoa has a light string running up the leach.
Obviously it's there to change the sail shape, but I'm at a loss
as to what it does, or when to use it.