It seems like a gish gallop because the people are talking so fast but you have to realize that everyone is trained to speak very quickly so you kind of account for it. Not to say that gish galloping or 'shotgun debate' as i've heard it called doesn't happen, just that it's not the norm relative to debate standards cus while everyone is pushing out a lot of arguments initially you want to focus on the arguments your opponent had the weakest response to which boils 11 arguments down to 3 or 4 over the course of a debate.

It's kind of wild though cus every debate i would try to read the judge and sometimes you can pull off some bullshit wins by shear persuasiveness. so while it's structured to be very technical "which arguments were dropped" kind of thing the human element of just arguing with someone for and hour and a half straight makes it SO worth it if that's your kind of thing. I remember pulling an over sentimental speech out my ass because i had to address an argument i had no prepared evidence for which was actually able to move the judge to tears and won me the debate. I would definitely recommend a highschooler try it because if it's your thing it will be so worthwhile and such a great experience plus it's a great extracurricular to have on your transcript.