Re: Stomp pad
Contact cement/adhesive (eg 3M spray 90) or very high adhesive foam tape (if you can find it eg 3M HHB). These are designed to work in water and not cause any problems to resin etc.
Superglue probably also works, but will likely break down after a while (superglue is strong but brittle; contact cement is strong but has some flexibility). Follow the instructions carefully for contact cement, its different to using glue.