I repaired an inflatable with some vinyl glue from the hardware store. I used loctite brand. I watched a lot of videos on repairing inflatable SUPs. They're more common and the repair techniques correlate. There were some good repair kits on Amazon. I repaired mine and left it in a pool for a couple of days just as a test. I was pretty tentative initially and stayed close to shore. It worked fine and I had no issues.

thanks i bought it off WA surf as a demo only used a couple of times. I got to use it for 3 weeks and then the seam opened up. I guess its all over then like you said another seam will go after i fix this one