We had to put in over 3 inches of spreader rake just to be able to get the wrinkles out without going max on the downhaul (actually max wasn't quite enough).

When I bought my Hobie 20 it had a pretty nicely shaped main. But it was explained to me that it had benefited from the custom at the time to take your new stock sails to get them recut so they would be shaped right (some markings on it seemed to support that). It's just that nobody openly admitted it at the time, but if you didn't do it you would be slow. Wonder if that's where we might be without anybody admitting it.