yes, point them in the direction he's running. also stagger the claymore so every other one is crossing lasers. this will make them explode at the same time. dont know if it makes sense to ya or not but maybe this helps...
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keep the straight row of claymores. but in between each one, point two that face each other. ya know?
EDIT:
oh sorry, just watched the video. not the strategy i use. pile them all up in front of double tap and the elevator door. just make a wall of explosives that faces out on the catwalk. so as soon as he runs by, twenty of those bitches go off at once. if it doesnt kill him instantly it will only take a few bullets afterward!