I never understood it either. Sure REAL hunters are ridden in a light seat, but it's not that in-the-saddle leaning forward thing that's used, and the light seat is only because hunters travel at a gallop most of the time. I don't think it has any place in the show ring - looks incorrect and ineffective today. Maybe it looks PRETTY, but I was always taught if you're sacrificing effectiveness for pretty, you're doing it wrong.
I'm never going to get used to American sports