Gorilla Waterproof Patch & Seal Tape, White Tape, 4" x 10' (Pack of 1) - Permanent Weather Resistant Seal for Leaks and Repairs

I’ve been stretching the life of mine pretty well with this stuff. It was able to keep the material stretched and prevent further wear. I haven’t seen any sign that this is NOT working and it’s been about a year, but my damage was lighter. I’m so stubborn, I’d probably try re-adding fabric in your case and following that with this stuff. Gorilla Waterproof Patch & Seal... https://www.amazon.com/dp/B08126M2R4?ref=ppx_pop_mob_ap_share