I've just placed a video up on You Tube covering how to repair/reglue the rub rail back on an inflatable. Just go to YouTube and search dinghyrubrail and you'll see it. Sorry I still can't post the URL here, sailnet won't accept it.
I've put another video up on YouTube explaining and showing how to repair a fist sized hole in your inflatable dinghy. We used a very old Avon hard bottom for the project. Next will be how to stick the rub rail back on.
Search on YouTube for Dinghy Big Hole and you'll find it.
I am posting this because I had a bit of a time researching how to fix my Avon inflatable, and perhaps someone can use this information.
One of the inflation valves on my 33 year old Avon Redseal dinghy broke a couple of days ago as I was inflating it. Not surprising, I guess, due to its age...