My understanding of pattern driving is when a driver purposefully drives in a manner to utilize the tolerances. Usually in a snaking manner which is deemed to be to the advantage of the skier. The 20 cm is to allow for human error and not to be aimed for as a driver
Rule 1.12: There are those that do not, or choose not to understand Rule 1.12. This rule states....“In any activity involving the performance of an official where a tolerance is involved, it is the official’s responsibility to be as close as possible to the actual specification. All tolerances are to allow for human error and the use of tolerances by officials to improve skier performance will not be tolerated.” Boat Judges are the “Captains” of the Boat” and need to make sure that times are not being manipulated to enhance performances. Scorers may notice a pattern developing and can bring it to the attention of the Chief Driver or Chief Judge. Chief Drivers and Chief Judges need to make sure that all officials understand that abuse of the rules will not be tolerated. Skiers who perform exceptionally well under false conditions will certainly be disenchanted when they ski within the rules.