Join Date: Aug 2011
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And sorry to hear about the grounding, never a pleasant experience. If I were you, I wouldn't worry so much about damaging keel bolts or their attachments, but rather the stresses caused to the hull. And more specifically to the hull around the rear portion of the keel, since that's what usually gives first, when grounding as you described. The good thing is, that's an easier area to examine than keel bolts in Dufour, not necessarily requiring any major invasive work. Take a look if you can see any stress cracks anywhere, or if in slightest doubt of your own abilities, let a pro do it for you. Or maybe you already did, since you said no structural damage was encountered?
Dufours are in my understanding pretty sturdily built, so the odds are nothing will be found, especially if the boat did not come to an abrupt halt. Nevertheless, it's better to be safe than sorry, and checking the hull is definitely worth while doing.
Ps. I was under the impression (could be wrong, too) that 4800s have a thin glass layer covering the keel. Do you know as an owner, if there's such a layer? If there is, I would imagine that might need some looking into, too.