Not trying to say that I know more than you, this is my first boat and first time sealing a boat. I am saying that what you're telling me is contradicting what others(from the boat repair forum) told me and also what's on the Gluvit can. Here's some direct quotes from the can: "seeks, fills and seals hidden leaks, cracks", "waterproof epoxy SEALER","seals leaky aluminum seams,rivets...". Actually you contradict yourself a couple times here by saying "Glove it is a coating not a sealant" then saying "repair with 5200 then SEAL with gluvit". Also you said"after the seams are fixed you can coat the hull if you like" and then said "...need both"(5200 and gluvit). I fully understood what you were trying to say regardless so no worries..
That being said, a lot of people have suggested using 5200(by itself) and if my boat still leaks I will use it on the outside of the hull. I don't think I have any leaks on rivets not associated with seams....the boat probably doesn't leak much at all, I'm just trying to repair any damage to the seals that I caused while chemically stripping paint....
I didn't see anything on your website about hull repair, judging by what I saw, I'd guess you are more a mechanic than a body work guy, but as I said you obviously have some experience with boats....I'll run your suggestions by some other people to see if anyone agrees with you....Too bad you're not in eugene, you could give me a good deal on some work and prove your point!
By the way, Thanks for sharing your thoughts and experience.....and WELCOME to the forum!!!!!