Mastbender said..
I've has several of those, and have never fixed them, it doesn't seem to effect the sail much at all, and they don't get worse, assuming the tear is horizontal only. I'd just keep using it and only go for a repair if it seems to get worse.
It's not particularly an easy fix, a fair amount of disassembly needs to happen for that kind of repair.
With that avator / name I think you're the best person to reply..
