Advice needed on rotted roof

So what does one do with a dented roof panel? The window frames are all still straight, but there's a dent the diameter of a basketball, and maybe an inch deep at its center? Non vinyl roof car.

Ouch. Going to have to get behind it and work it out, you'll probably have to do some heat shrinking because a dent like that will usually stretch the metal and keep it from returning to it's original shape. You'll need someone that really knows how to work metal for that one, not just a bondo slinger.