Likewise. I've used both Bostik and Polymarine for repairing several dinghies as well as stuff on my RIB. Both seem excellent, but I use Polymarine now because I could order direct in larger quantities, and get thinners/cleaner, patches, parts, from them too.
I've found them very helpful and their products good. I've no conection with them, nor am I 'in the trade' - just a satisfied ordinary customer.