Worth a shot. Not sure about using 5200 to attach it though. It stays flexible and is designed to be used under compression, like thru hulls. I would think using a 2 part epoxy and clamped would work.I always wondered if new ears (especially for the dogs) could be fashioned out of epoxy coated wood and then attached with 3M 5200. Two of my ports have the middle dog ears broken. I am hesitant to replace the whole port, as my lenses are clear and I have new seals and have never had any leaks. If anything, it is at least worth a go...