Stifffening up a Hemi hood....

I just bought a Hemi fiberglass hood for my 68 barracuda and it is a little too flimsy. I think I got a race weight one. It doesn't have any bracing on the bottom side of it. Does anyone have any ideas or suggestions on how to brace it up and make it more rigid. Right now it's almost like a piece of paper lol. Thanks