I bought my first boat about three months ago. It's a Cal 3-27. I sail on a lake in north Georgia.
The last couple of times I've been out I've noticed that the leach on the mainsail flaps or flutters. I don't know if it's always been doing it and I'm just now noticing, or if it just started doing it. Given how little I know I'm sure it's operator error, but I can't seem to get it to stop.
This happens close hauled or on a broad reach, or anywhere in between. It happens more with stronger wind and stops completely in light wind.
Any help is appreciated.