Speed is actually your worst enemy when shooting at known distances that are a long ways out there.
This seems rather counterintuitive, please elaborate. It seems to me that if you have two equally accurate bows, and the distances were precisely known, then speed becomes irrelevant. If, however, the distance is not exact, the faster bow, with its flatter trajectory, would result in a smaller vertical deviation from the intended point of impact. I guess I can't see why speed would be ones "worst enemy."
Mike