super fine steel wool...
rub lightly, and the marks will come off. Follow with a wipe with a damp cloth, then follow that with brasso metal polish.
Pour about a quarter size puddle atop the hood, use a paper towel to rub it in a circular motion, then buff with a soft cloth.
Do one section of the hood at a time, and repeat as you feel necessary to produce the shine desired.
I'll never forget the first time Little Fred saw me take steel wool to a hood....