Great article, but could not help noticing that the main sails could be up maybe an inch or two further especially in the higher wind on page 7.  I see this a bit at our local fleet here in Michigan somtimes. Best thing to do to get a good reference point is to raise the sail and stand back from the boat and check for a "sag" in the sail, which is slow. Then with a sharpy mark the halyard near the winch box at the point in which the sail is "up" the way. Then you can use that as reference against the wind of the day and tweak it one way or the other in varying wind strengths. I know that the sail makers have a bit of "wrinkle" at the luff, but too much wnickle at the full which can be excessive sag is slow.