-i- do 4 because (A)the weight, or lack of, i wanted on the back end of my arrow and (B) the surface area i wanted to have to achieve drag for a forgiving arrow was best facilitated with a 4 fletch of ff sk200's (4.4g apiece). i also like being able to nock without the need of looking at my vane orientation....
Are you from Oregon? That's really the only place I've seen multiple people shoot 4