i was fletching some arrows and got to looking at my jig. in the package was another disc for fletching an arrow with 4 vanes. the jig is the bohning professional. i use the 2" blazers for my arrows. i use the beman hawk carbon arrows. they perform pretty well. i know we have some on here that shoot the 3-d for competition. would that be what the 4 vanes would be used for? or could they be useful for deer hunting? i shoot through a whisker biscuit, so it would work, but i just wanted to ask would it give me any better performance than 3 vanes? thanks. another thing for anyone that orders their arrows- i specify shafts only when i order, but still get fletched arrows. is this the usual? i would rather get a bare shaft than one i have to strip and clean. thanks again!