IanD wrote:I think a time penalty would be more appropriate penalty for a mistake than disqualification, but the rules do not currently permit this. So where the splits make it clear that people have taken an illegal short-cut, they should be disqualified by the organiser (or planner or controller).
I agree that a time penalty would be better, and we ought to consider changing the rules to allow that. Disqualification carries something of a stigma, in that people assume you deliberately cheated, whereas as has been said here, many cases of using forbidden routes are unintentional. Working out what time penalty would be appropriate is difficult, I suggest one second longer than the slowest split on that leg so that it's plain that no advantage can ever be gained.