Yeah I'm fully aware of the sagging issues, but I also don't mind the look of splitter rods so that is always an option. And the lip and car would be black so they would blend pretty will. And if it doesn't sag, all the better.
Another option that I haven't seen anyone do yet is a carbon fiber stiffener.
Carbon Fiber Stiffeners > Hat Stiffeners
Just lay up your own at 5/8" tall and about 1" channel.