Dacron can be repaired in Botswana just as easily as it can be in Rhode Island, Collingsworth says. If you have an exotic material, it will be repaired with Dacron in many other parts of the world. Having chosen a sail material, decide what tools and repair material you ll carry aboard the boat. It comes under several trade names, such as Ripstop and Stickyback. With PSA you can repair virtually any sail, Collingsworth says.
Most sails rip for two reasons.
The first is that it catches on something on the rig and tears. The second reason is that the sails are old and the material has degraded. In both cases you will have a ragged edge. Drying the sail, then applying PSA is the easiest and best solution. After you have applied the tape, you should sew over the rip using a zigzag-style stitch.