I have a crack at my hull/keel joint and am debating filling it with 4200. It is no significant and as I understand it this is pretty normal for boats with an external keel. My concern is that since my boats up north in Wisconsin and spends a good amount of time frozen, I'm wondering if filling it might actually cause expansion if any water gets down the keel bolt and through the cracks. One of my keel bolts has had this problem which I mitigated through drilling a hole on each side of the bulge, epoxy fill and some vigorous hammering. Thoughts?
Gene Fodor "Hawk" C&C 29-2 84-85
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