when you shorten the strap at the end, you fold it in half, then fold it over.
in other words. our 4" straps are 37k straps. fold it, to make it a 2" strap at the end, then fold it about 18", and we bolted it.
heat a nail glowing hot, melt a hole, put a bolt and washer through the hole, stagger the holes, one about every 3". we used 5/16 bolts.
that 4" strap we repaired, pulled a john deere 7810 front assist out of the mud, using another john deere 7930 front assist, and our repair didn't fail.
DOT would flag that as unsafe. pretty much, if you have to repair any kind of load securing item, or load lifting item, you need to replace it. your repaired item can still be used in your personal use, or off road.