Years ago, when I was working at Summerfields boat yard in Ft Lauderdale, we had replaced a guys rigging
and used stay locks. The cap shroud
failed and put a hell of a bend in the mast at the spreader. Fred Sparry, the yard manager was having a fit! He thought he'd have to eat a new mast.
I told him that I might be able to straighten it out, given enough time, by heat shrinking it.
So we laid it out and I went to work with a weed burner and a garden hose, heating
it up and cooling
it off with the bent side up, allowing gravity to help.
I had it straight as an arrow in a couple of days.
I became Fred's hero.
The boat sailed away and we never heard another word so I guess it must have held up or maybe the rig fell down and the boat sunk, I don't know. The mast was about 70' long, it would have been an expensive item to replace. I should have gotten a raise but I didn't!