My old-ish avon rib has developed a nasty leak in a bad place... starboard stern seam, right below the waterline. My first patch attempt lasted a few hours. My second attempt, was able to get her in some A/C and really take my time... lasted a month or so (boat stays in the water) Unfortunately just recently the patch came off the seam, and it wasnt long after that the water pressure while driving on it opened up the seam again (fun while underway... filled the chamber right up with water awful quickly.)
I've been looking for another hull here on-island (grand cayman) but having a hard time. a re-tube will cost me over 4 grand, before shipping and duty here, and installation.
Have seen mentions of sewing tears, not much info on it though. Theres a good two inch overlap on the seam, it seems like sewing it could add some strength(?) Any experience with it? Would you patch it first then sew, or vice versa?