It is ridiculous because these are long standing rules that US Lacrosse has waived for this tournament just to get more entries.

A kid who plays for his HS team has a huge advantage over a kid who just finished 8th grade (e.g. exposure to HS coaching, practice, games, competition, etc.) That's why the rule was established in the 1st place.

When you're in HS, you should be focused on playing HS teams and getting recruiting looks - not flying to FL to win a mythical U15 championship against other Rising Sophomores.