Hi again,
No calculations, but it seems from other posts that you have an older Bristol, meaning that the hull is likely polyester. Of course you would grind through he gelcoat to bare glass before expoying the chainplates on, but my concern would be that the outer bit of polyester and glass laminate that you epoxied to might rip right off of the layer underneath. So the glue itself wouldn't fail, but the surface you're gluing to might not stand up to the strain. A bolt, or several, going through the hull and having a hefty backing plate behind it cannot thus rip a laminate in sunder. Try gluing a popsicle stick to a piece of cardboard, then rip the stick off. Usually the glue will pull up a layer of ripped cardboard, thus delaminating it from it's base layers.
Ben
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