The loads on a fin keel on a sailboat are generally such that any fairing material is going to give. They flex. They have to given the loads involved. A rigid joint, using epoxy, is going to crack rather than stretch and contract with the movement. A lot of it depends on the hull-keel join design. I don't know your boat, and I am not a naval architect.
The problem with fairing and glassing the hull-keel join is simple. If you damage the keel and need to remove it, you've vastly complicated the job. Also, that makes the hull and keel more rigid, but making it more rigid makes it far less forgiving in a hard grounding. IF it doesn't give, something else will.
BTW,
if the bolts can't support the weight of the keel and the stresses it is under, even 5200 isn't going to do the job. All 5200 would do is help the keel tear off the outer layers of laminate when the keel falls off. The dynamic forces on a sailboat keel aren't such that you can rely on a sealant alone to keep the keel in place. Thinking you can do so is both stupid and foolish.
__________________
Sailingdog
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Telstar 28
New England
You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.
—Cpt. Mal Reynolds, Serenity (edited)
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