Sunfish Sail Diagram How Do You Repair A Huge Rip In A 14ft. Sunfish Sail?

How do you repair a huge rip in a 14ft. Sunfish sail? - sunfish sail diagram

Today when I sail, after they bet on the right of the overturned boat, I noticed a huge fraud on the edge of the sail.

I just want to know how to fix it. The veil is very old ... I know it might be easier to buy a new candle, but it's a bit expensive ...