Originally Posted by zz4gta
...Now for the news you don't want to hear:
If you're already getting a 12 sec. credit for not flying a chute, and there aren't many DDW legs, then you're not that disadvantaged and need to find improvements elsewhere.
Not necessarily true. Asyms do much better on broad reaches. If you have a lot of broad reaches, an Asym should overcome a 12sec/mi adjustment. On some boats, the Asym is so much better on a reach that they will do linked reaches to a downwind mark to achieve a better VMG compared to DDW.
Try these sites for specific info regarding your Irwin:
Irwin Owners Group