Count up the number of holes drilled and tapped with the backing stock
and connection of the vang and then compare it to a full bale.

The 4 - 3/16" socket head screws that hold the Quick Vang bracket to the boom
are of no consequence when compared to the 3/8" or larger holes that would have
to be drilled for a bail. Plus a bail wouldn't work with a Quick Vang bracket.
And with a 1/2" piece of aluminum bar stock installed inside the boom it's
like da holes ain't even there.
S/V Express 30 "Ringmaster"
"Trains are a winter sport"