RE: 4 vanes vs 3
im assumeing that you are talking about flu-flus. they are mostly used for small game hunting but i wouldnt see why they wouldnt work on turkey. it depends on what your bow is set up for. the wisker biscut rests will cause too much drag on the arrow. and if you are shooting 50 lbs or less you shouldnt have a problem useing your deer setup. another thing that can help is if you use a good head designed for turkeys, you can find them most anywhere.