George makes some great points in his recent post. How about looking at penalty shoot-outs from the perspective of the goalkeeper. Could they use imagery to advantage? Take a look at this video, which suggests that standing still might be the best option for stopping a penalty and explains why goalkeepers are reluctant to do so.
http://www.sluggishvideos.com/season1/to-dive-or-not-to-dive
Regards
Peter