Urinal, trough, dividers or no, business still needs to be taken care of. Going to a stall or holding it seems totally unnecessary. So what if Joe blow homosexual sneaks a peek? As long as he doesn't reach over and give it a tug, who cares?

That said, I agree with urinal math as stated earlier, but only until it becomes impossible due to crowding. Waiting when there is an open urinal is retarded.