On my 402, the rubrail screws tend to back out after a hard run. I also have a leak that I believe it coming from the rubrail.

I was thinking of removing the rubrail, and filling in all the screw holes. The rubrail was replaced, and I am guessing the old holes may not have been filled. Was also wondering if injecting 5200, plexus, or some other type of adhesive into the deck joint would be a good idea to stiffen/seal things up? Any thoughts on this??