Originally Posted by sailordave
Plus remember, you want twist at the top of the sail when it's LIGHT b/c that's when the difference in AWA is greater from top to bottom due to frictional resistance across the water. When it's blowing hard, this difference is minimal and you want the sail flat as possible top to bottom. Another reason to use the traveler.
I was talking about using the twist to dump wind from the top of the sail while keeping the bottom section of the sail properly trimmed. I've found this to be useful when the boat is heeling more than I want, but I'm not in a good position to reef.
The one thing in your post that made me think is having the draft move back as the boom lifts. I'm going to have to play with that next time I'm out (tomorrow) to see the effect.
I agree with you on using the traveler to adjust the angle of the sail with respect to the wind, and wrote that in my initial post.