Why should i have to have 2 different set of arrows ,one for hunting using 2 inch vanes and another with 4 inch vanes for ibo shoots. No matter what size vane is on the shaft you still have to judge the yardage and make the shot. Mr. Turner if it is a hunter class as you say then there should be no back tension release allowed in this class,or weighted shafts used also.I don't know any hunter out there who takes a back tension release hunting with them. It has nothing to do with knowledge or abililty as you say,its just your way of keeping the hunter class 3rd rate. The ibo was started out to help the hunter. Lets do the right thing and allow the use of 2 inch vanes in this class.