Yea thats a good spot to aim for. Or of course the area right next to it where they sit at the side of the BH, but you would have to aim for the ceiling on the inside of it. but as far as it going off balance, that I think would totally depend on whether or not the pilot paniced after the hit. And sadly, good pilots dont panic. And thats besides the fact that the BH basically handles like a (your favorite sports car here X____________) compared to the other helo's (not the attack choppers, to me they are basically the same).