also, if you find a true maniac shortstack, try and sit directly on his right. you know what he is going to do, so you dont need position on him because you arent worried about him. this way you get to see how the rest of the table reacts to his push, and play accordingly.
its like in a low stakes limit game, if you can find one of those people who will bet/raise every single time without fail (they are around), then sit directly to his right, and you will be permanently on the button. you act last every betting round.