Sheffield City Race 24 Nov 12

[Marco Polo]

It's more complicated but the same approach used for score or gaffled courses should work.
Certainly less complicated than the (zero?) split time editing that was needed here.

[CrawfordL]

It was clearly stated in the final details that OOB roads were OOB and crossing must be by underpasses or bridges. On southern road crossing, using in bounds underpass was 30-45 seconds slower than using OOB crossing.

Flaky internet where we are staying this week so late to comment.

This comment, if it refers to the crossing that Spookster illustrated, is incorrect. I used the road crossing (and declared it before the chase). I left the control (on course 3) in front of someone, dutifully used the crossing point, waiting for the green man, and arrived at the control second. I was very surprised as I thought I was doing the correct thing, (having wrongly remembered the final details to cross at pedestrian crossings, underpasses or bridges), and couldn't understand how they had got there quicker, until discussions at the finish, along with careful study of the map, helped me to see the underpass. It was an honest 'cheat' and slower than the intended route. I'd never do the same thing again in this area as I now know the layout.

[Roger]

I can't remember where or when, but I'm certain I've run in at least one race where that is exactly what happened.

DVO Chatsworth - many,many,many years ago - leg across open moor through an uncrossable wall - 2 choices of crossing point, each with an identical control code?

Yes, Chatsworth indeed.