Nothing too strong ever broke, but ...
Hi,
That fitting looks pretty skookum. True, it would be moreso if it wrapped around, but not, I think to a degree corresponding to the difficulty of fabrication. The highest loads on the gooseneck would likely be when the boom is well inboard, because that's when the sail is loaded highest, so wraparoundness wouldn't seem to be as important as good fit, and firm attachment with a suitable number of large screws.
We see gooseneck weldments fail, and pins, and sometimes the clevis pins wear through the tongues, but not bolts pulling or shearing often, though we do see that sort of things with vangs, which put a lot more tension and shear load on things.
Fair leads,
Brion Toss
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