Great topic. Although @horton takes some heat. This is a great discussion and one that all drivers should discuss. As I driver, I aim to give the best pull I can while attempting to drive as straight as possible as the rule states. The tolerance is there for my protection as a driver not for me to aim for each pass. None of us can drive a completely straight path but that is what we should be striving for.
I think with the new sure path and ski path technology, the drivers that want to get better will improve with the use of these tools. I think this is a topic that needs to be discussed and addressed after all Those ranking list mean a great deal to the open men and women skiers.