Try G/Flex 655 thickened epoxy. It's from West Systems and is compatible with all of their epoxies. It will wet out cloth and can be combined with flox, micro-fibers, cloth layup,etc, if you think you need it. It is a structural adhesive and remains much more flexible than standard West System epoxy. I got mine at a local boat store, but you can order it at Walmart and have it delivered to your local store for free - or Amazon.