1st of all if your going to d one you have to do them all otherwise your arrow wont fly straight. Also it really depends on what kind of bow you are shooting. If you are 270 fps+ i would stick with the straight because you can get a 40 yard shot out of it with out any help. Now if you are shooting at something smaller than that it wouldnt be a bad idea. It will help keep your arrow straight and in the are at farther distances. Hope i could help.