The waistband rolling is a point of emphasis in HS bball in texas. You would be happy here.
Saw a ref make a kid unroll his shorts in a Jr High game here in Illinois last week.
I also noticed Mark Smith pull his shorts up very high in Fiday's game, but not roll the waistband. It seems some of the kids don't like where the shorts hit them...then again, maybe I'm old and I just don't know that it's cool!