I never got to do Parli unfortunately, so I can't speak to that. I have only the stories of my coaching team, which was the original coach followed by their sta

I never got to do Parli unfortunately, so I can't speak to that. I have only the stories of my coaching team, which was the original coach followed by their star student of a college Parli team that performed very well on the national track (something like second or third for several years). I've seen videos of (maybe national track) high school Policy debaters speed and spreading through a massive ream of evidence, but obviously that doesn't indicate the frequency.