Sail Number Material...
I know it sounds weird, but I got a great tip from a sailmaker about two years back. Not only is it very cheap, it also will last longer than the sail itself.I suffered a dismasting on my Prindle Catamaran that resulted in some minor damage to my main and jib. The jib was fixed for about 100 bucks, but the main still had a small tear in it when I returned to pick up the pair for the weekend. The sailmaker, who is a good guy (and nationally known for his racing sails)felt bad about forgetting to repair the main. He let me in on a secret. For smaller tears, he prefers to use the material that sail numbers are made of. It is really tuff, super sticky, and makes the torn area slightly stronger than it was originally. You can only use it on smaller areas of the sail due to its rigidity, but it should work fine in your circumstance (1 inch tear).Simply contact your local sailmaker and ask him/her for a couple of square feet of the material and you should be set. Make sure you put a patch on each side of the sail.Best of Luck - Rob