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Message: <blockquote data-quote="thill" data-source="post: 492010" data-attributes="member: 4972">From what I remember of a friend extending a boat, the weld was put BETWEEN the strakes/supports and not right on a support that could act as a "hinge" that would promote cracking.  I think it was a simple butt-weld, too, no lap or support.   A weld in the middle of a panel just doesn't have much stress on it.  His boat is still going strong, with no issues, as far as I know.   He did it with a spool gun on a Mig/Argon setup, but he is a professional welder.   Also, if I remember correctly, he heated the metal up quite a bit before welding to help with annealing/thermo issues.  Turned out great, of course.That being said, do your own research, as my memory might be faulty.</blockquote>