I am a green pea when it comes to boat ownership. I just resurrected a 1958 Evinrude Sportwin Ten and it runs like a top. My question is concerning Gluvit. I just read about it online and am looking for feedback from anyone who may have used it. Is it as good as their website claims? Inside or ouside? Preparation? Any info is appreciated. I want to make sure my money is going to be well spent. My boat is a 12' riveted Sea King 1964 vintage. I takes on a small amount of water in 3 to 4 hours...maybe a quart. Thanks in advance.