Joe,
Mullach nan Coirean:
I often go off the path in order to run on soft grass but have not taken a straight line to the stile. Where about do you leave the path? Next w/e I am again up there supporting another attempt and will look at that.
Some years ago I (with Rob Woodall) had reccied a route along the N ridge. It has very good running apart from a couple of rough bits and misses out the track/road running at the end. I did not do it in my solo Ramsay as I was finishing in the dark in bad weather and had little time to spare.