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I plan on sewing it with high test fishing line and then covering with goop this summer... Hopefully it will hold.
This method worked for me. Took a big chunk out of the side after I caught a tree trunk (the top of the tree) in one of the windows. Smoothed the edges out with a torch and cut a patch from an old track. I used berkley whiplash 65lb fishing line to stitch the pieces together (had to drill small pilot holes and feed the line through) covered in an epoxy, let it dry, sanded it down to smooth because I didn't do that great of a job the first time )) and covered it again. It held up the entire rest of the season.