Tom, It depends on what your going for. 3 is enough for a bow to shoot fast
and go a little farther but still at most half of what a regular arrow
would. 4 makes it very slow and diminishes distance to 1/3 regular arrow. I
hunt ducks,pheasants,etc. I use three because it is faster and goes farther
but 4 would be better for trick shooting and practice.
Answered on 2/3/2013 by Anonymous