Or you could just do what several elderly drivers did to me today.
Forget the indicators altogether, travel at 20mph below the limit, then brake when you see another car approach on the other side of the road.
Then, takethe right hand lane into a roundabout knowing full well that you will cut me up when you get to your exit. Oh yes, and pull over at random when you see something at the side of the road to gawp at. Not to mention travelling in a bloody convoy, thus preventing any hope of an overtaking manouvre!
Sorry, had a bad journey home this evening, needed to get that off my chest.
God, you could tell it was a Bank Holiday..