Sway bar on street strip car yes or no

Yall all say no rear sway bar on the strip....and I agree 100%, but I have to add this tidbit. I've seen FIRST HAND a rear sway bar added that made one hook harder and speed up. Just once. We still advised the guy not to add it but he was dead set on it and did it anyway. It was a late 70s Z/28 whose rear suspension is not light years different than our Mopars.