'Glassing in a few strips of styrofoam will make the hood less of a noodle, and doesn't weigh much if it's done during the layup.
Running a length of aluminum angle attached to the fender edges helps keep the hood level with the fenders, and can double as a Dzus-button mount.
With hood pins, 1 near each corner and 1 at front center has been fine for me up to 130; without the center/front, that area (Duster) would bow upward.
I've always wanted to vent my pin-on hood near the back for aero, but the pain in the butt will be replaced with steel when I restore the car to its original SS/IA livery.