What's the Latest in Temporary Repairs for Torn/Ripped Top?

This regards a '65 Signet convertible. The first repair was to a section about 3-4 inches long. I had an upholsterer "sew" it closed and I glued on some kind of patch over that. Well, the stitches for some reason fell out or rotted and I peeled off the half-*** glued-on patch. Now the damage has spread to about 12 inches long. Is there any hope of stopping this monster? Thank you.