My question is why does the IBO allow the use of fat shafts and X cutters in hunter class but not blazers?? I am not knocking the guys who do use them, but this weekend at the worlds i was shooting the throphy shoot in hunters class and i saw more guys shooting fat shafts than not?? If it is to be truly a Hunters class (guys like me using their hunting bows) why are there not any rules on arrow dia???