Depending on how big the rip is and where it lies in relation to the seams, it might be worth a consultation with a sailmaker. See the pic; the long bright white strip in the bottom panel "V" (and the small strip on the luff rope) is a complete body pass repair; the darker white stip on the second panel aft is a head-only repair. Sail still seems competitive to me and the people I beat once in a while. Lot cheaper than a new one...