| The drag is not the issue involved. The drag of having missile fins turned backwards would be negligable. And honestly, changing the fins just a tiny bit would negate the issue of drag. Direction-neutral fins are very easy to make. Im quite sure the actual issue is the jet wash, and the heat given off thereof. Heat seaking missle would be thrown off by their own engines, and you are incorrect in saying that the guidance of this missile would correct itself, at least not in all cases. In many cases I would suspect that the missile either would A. Get tossed about so much the guidance package may be damaged, or B. Get tossed about so much that the forward velocity is mitigated, thus making the missile fall rapidly.
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