I can't begin to picture the set-up. Speaking of picture......that would be worth a thousand words (as they say).

I wonder if some 3M automotive 2 way tape might not work better than the glue. My understanding is that it is pretty tough stuff. My paddling partner who works at R&D for Nissan suggested that line of thinking......I'll ask him again what and where this product can be procured. I remember being skeptical but he gave me some examples of uses. He also told me to be sure when I stuck it on that's where I wanted it cause your not getting it off. Then it would be able to flex with the boat......it's a thought :exclamation