Harry, I used the Kohler and drove around the outside using the right analogue to check for likely collisions and avoid them, if you need to 'help' the others to get past you park in the centre and hold the handbrake and it's rare to get points even if shunted into other people.
You will get hit a lot though so i tried to get wrecked before double time started with this method.
I did this on intermediate whereas every guide i looked at says try beginner. I'm guessing the other cars score higher as i had just over 1000 when the double time started and was still 8th.
From then it's a case of getting lucky with some terminal crashes.
I only did this yesterday so it's fresh in the mind. It did take about 6 or 7 tries before i got enough points for a podium finish.
I hope that helps a little!