Jay, years ago my boom snapped at the vang attachment point. I removed the vang ss strap, had the boom butt welded then had aluminum angle iron pieces (about 18" long) welded to the top and bottom of the boom, centered over the butt weld. We repositioned the vang attachment strap. It looked like hell but lasted 2 years until we got a new boom section
The main was loose footed so the angle iron on top didn't cause any issues