You should slide your headsail tracks back to open of the top shape of the sail and drive the boat with more power. Being too far forward, it is pulling down hard on the tack making a super tight leach and cupping the sail. Evident at 21:10 with the leach flutter.
You should slide your headsail tracks back to open of the top shape of the sail and drive the boat with more power. Being too far forward, it is pulling down hard on the tack making a super tight leach and cupping the sail. Evident at 21:10 with the leach flutter.