WesternMdHardwood....You can if you want. It won't make a marked difference in performance.one way or the other in performance. However, the only thing I can think of is arrow availability. If you travel any you risk the chance of winding up somewhere with no arrows, be it your fault (forgot to pack them) or someone elses (they got broken). Of course the broken could ultimately be your fault too I guess. Oh, I am rambling again. The point is, that if you shoot 30's you can find arrows at any WalMart. If you cut them back, you will not find the shorter arrows readily. While WallyWorld arrows may not be your thing, they may save the day sometime.
Just a thought,
Dryridge