While practice is always better, there is nothing wrong with reading up on the subject. One of our very own autocrossers, Vivek, not only can wrangle a car with the best of them but he also writes. He has written some good articles on the how and why of fine cone crushing. Everyone should take a peek and check it out. http://www.beyondseattime.com/ It’s a good all-around read concerning how to drive an event.
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Rodney