Hey there.
Sorry to hear about your sail.
Looking at the photo of your sail, my immediate reply would be go and get it properly repaired. Simply because the damage extends through to the batten pocket/seam which is load bearing and even with the strongest of repair tapes, would get worse if used........But, we do have rolls of ding repair tape which is stronger than normal mono repair tape and if you rinse and completely dry the sail, the magic repair tape may hold for a few sessions. For 12 bucks, it's maybe worth a shot. Especially because the next 5 days looks pretty promising for wind!