I patched mine with some thick nylon patch material and epoxy. I used a LOT of epoxy and let it dry for about 15 minutes before i put the patch on, then smeared some all over the edges and let dry overnight. Worked great.
walking back from confederate reef in the dark and caught some oyster shell on one of those pea gravel domes Parks and wildlife have scattered about
they were the last pair of xxls so Im on to the patch kit now