You will need to heavily reinforce a large area if you want to use the same hole. Preferably, the reinforcement should be bonded to the deck as well.. It looks like a tricky job to do with the small hole you have to work trough.
I would have made a glass-fitting instead of the metal one, and glued it to the reinforcement if I wanted the fitting as far back as you have it.


New boats come with a similar fitting as you have, at the bow-tip. I dont remember if they went all the way trough, but I dont think so. Gøran probably reinforces the bow a bit, and glue the backingplate in place before he put on the deck.
Retrofitted boats have gone all the way trough, and you can buy the fittings for this from Marstrøm and his dealers. It really doesn't look that bad when faired and painted.

The easiest way to fix this, in my opinion, is to fill the existing hole, fair and paint. Then move the fitting to the bowtip where it's easier to reinforce the inside of the hull by just using thickened epoxy.