I'm having trouble with it too. I wish they would have some sort of balance between the A.I. reading everything that you've done and are doing, and the silly A.I. of enemy trainers/gym leaders. You unlock the PWT pretty early, and if you want a chance at some early BP for a nice TM or some other item, you'll have to go and waste your time EV training and breeding at a time when you actually can't breed in game.
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Well dekadense has a point, no one that EV trains has much of a problem with the PWT... So the only choice here is change, or keep trying to go about the way you have which as you testified has not been bearing fruit.
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