Most of the time I stay behind people, making pressure so they mistake, then I overtake the fail driver. When somebody is behind me I test if they are next to me in his screen (most of the time they are) When I know that someone is really really bocking me or ramming me on purpose, there will be payback, even if I loose the track too. If I miss a corner or hit a pole I make a full stop and wait for closest drivers to pass me, then I get back to track