55.2-59 go easy please

[FAKKY]

ok
really struggling with my body work lately ...... this is my first truck and literally do everything on the ground. But I also dont seem to have the knack for it. My thought originally was I could fix the small imperfections with bondo as unless your really good everyone has to do tht anyway. But see my issue below.

I know (now) that the answer is probably I should have done this in 1 piece .... and I should have used a piece of machinery that I didnt have to get the bend better - but it seemed ok by standing on it over pipe - but then tightended up after final fitting and stretch of lip.

Anyway ......
My question is - is there anyway I can pull the center "divot" out more in center to get the original bend/curve better back into place ..... eg weld something onto the surface and use winch or slide hammer ??
Basically to reduce needing 1/2" bondo in that deep part.

*sigh*