Was watching some stuff on Youtube about 3 vs 4 fletch. Nobody really gives a guide to what type of arrow setup would need 4 vs 3. (i.e. heavy arrow w/high FOC, Light arrow w/Low FOC, any arrow, average arrow with light point weight, arrow your going to shoot in the wind). Looking to setup some kinetic chaos at about 520-550gr high FOC for elk, and some x-cutters for 3D and trying to decide if i should 4 fletch either of these.