Schools have to get 10 practices in before the soccer season otherwise they are not eligible to compete that is why there is hell week.
You can get 10 practices in easily without making it hell. Zero fitness gains will be made through 2 a day sessions and you will never get an understanding of the technical and tactical skill level of a player because after 2 days of it they're toast unless they're a freak athlete. It's developmentally inappropriate and it doesn't do anything but grind kids down.
If the coaches has a [****] clue they'd do all tactical and technical drills at high tempo game like conditions which actually improves game.conditooning! But no, you've got a guidance counselor running a joint tryouts with JV and varsity where kids that are 13 are playing vs kids who are 18. Just [****] hole stupid.
Coach John the history teacher may have even played college ball but that doesn't mean he knows [****] all about tryouts athletic development and how to structure a season for periodization.
I should also note that very few trainers at the club level get this either. At least in my experience.