Bow Eye for Mooring??
You didn't give your boat model, but I would caution the use of the bow eye as your only line on a mooring, except on lighter boats such as daysailors. It is good hardware for steadying the bow on a trailer. Not so sure a single bolt (including properly shaped internal backing block) is the best for riding out a heavy storm on a mooring for a boat of some size, at least not in the ocean. I have a 23, and it does not have a factory bow eye, either. For my mooring line in the harbor next town south of you, I use a twin yoke that lays over both bow deck cleats, with a chafing sleeve over the lines at the rub rail. You might use a bow eye for a safety or short term tie-ups.