Wired video with some interviews: https://youtu.be/0FPsEwWT6K0
And a transcribed video from a highly-prepped debate: https://youtu.be/JhzwSlK4uEc
If you make a bunch of points that the other team doesn't refute directly, you get to nail them on it later.
Short of you speaking so quickly that even the judge didn't understand you, it was heavily encouraged to speak extremely quickly even back then.