Wonder if he could mend this for me? :
A couple of self tappers and a bit of plate should sort that
Tigerbond. ... sorted
to be fair, it probably is stronger than it was. 12" long bead of weld even with little penetration will take some shearing off, the way he's bolted though the plates to the chassis will limit flexing of the weld in a manner that would tend to open the corner of his patches.