Normally what I'll do is line up more or less on the center of the car in front of me, thus making my intended direction obvious to those behind me. I do leave myself "dive room" so that if I need it I have an escape route. If I'm the first one to the intersection I do essentially the same thing perhaps moving over a bit more to the left of center allowing the cars that want to turn right a clear path, but never so much that straight traffic creeps up on me. As I cross the intersection I bring myself back over to the what I call the "safe zone" which is the right third of the road (remember the law is as far right as practicable). This has served me well as I act in a manner that drivers can understand. Of course there's ALWAYS some morons but that's life.