The GA's transverse metacentric height (GMt) is a bit taller than your average deep-V glass boat and the boat will be stiffer as a result, e.g. it will a) roll with the waves a tad more, but b) will not heel over as much when people move to the rail. The GMt was selected according to what semi-dory hulls typically have and is one of the factors that helps this boat bob up and over swells and waves rather than allowing the water to ride up the side (riskier). It makes the boat safer when at rest or adrift.
As far as that flaking epoxy goes, if it is in addition to the required glass schedule, then I'll leave it up to you on what to do. If it is part of the required glass, then you'll want to fix it. Flaking epoxy generally occurs from one of two things. Either a) the epoxy did not bond to the surface that it was applied to, or b) the resin/hardener ratio was off and there was either too little resin or too much hardener. Too much hardener (versus the resin) results in a more brittle epoxy ...If you insist on making a mistake (haha), it's better to lean towards too much resin (versus the hardener) ...you'll just get a slightly more flexible result and that's not bad. We're talking about small errors here, so don't go away thinking that I'm being cavalier. Now on the other hand, if the epoxy did not bond to the substrate, then it could be because of a foreign material being on the surface (dust, grease, amine blush, etc) or the surface was very smooth and well-cured (months?). I once had to use a carbide scraper to scrape off a brittle layer of epoxy on an entire sheet of ply ...and all I can figure is that I must've gotten the ratio wrong and the stuff turned out to be too brittle. After scraping off all the old epoxy (you can also pull off fiberglass that didn't bond), I washed it all down with a strong ammonia/water mix, sanded with 80-grit, blew it off with compressed air, then washed with the strong ammonia/water mix again. After that, I recoated and was careful to make sure the resin/hardener ratio was exact and well mixed ...no problems after that. Chit happens...
Brian