John,
looks like a standard "Drop one end of the mast off the wall racks" kind of dent and bend to me.
The same thing happens when you are trying to turn the mast over without care on a set of wobbly trestles on a wobbly wooden dock in Malta after having too many beers at lunchtime.
One way to straighten the mast is to tie the mast head down to the aforementioned dock and support the section in a shaped wooded chock over a steel saw horse at the bend-dent uppermost- then lift the bottom of the mast and get the disgruntled owner to remove the trestle while you slowly let the weight of the rest of the section come to bear on the bend.
Repeat until the section is straight and the dent reduced and the owner's wife will talk to you again.
Not that I have personal experience of this kind of butchery, you understand.
The Malcolm Miller one of the tall ships youth trust's schooners was centre punched about 15 feet up her mizzen by the bowsprit end of her sister the Winston Churchill resulting in a dog bowl sized and proportioned dent in the mast wall and a very interesting meeting of the trustees..
I took the mast out in London docks in about 1982, I think and Roger Plum from John Powell Metal Masts used a short Enerpac ram with shaped chocks positioned on a long stick to push the dent out from inside.
He did such a good job of the repair that I could not see any trace of where the the dent when it was finished and that was on a bare aluminium spar.
Good luck,
Joe.
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