Hobie ST Fin material?
 

Anyone know what type of plastic or rubber the ST fins are made of? I googled it but nothing came up. I'm looking to do some minor tear repairs. I've seen recommendations for Plastic welding, Marine Goop, Gear Aid Aquaseal Urethane adhesives, mesh with the pedal straps melted into it. I want to find a specific material so I can find specialized adhesives or materials to melt.