With regard to getting to Corrie Fionn after the access runs have broken, this may only be attractive to a small number of skiers and then perhaps only for two or three extra weekends (?) so a solution would have to be affordable in relation to the potential additional ticket income.
If a chairlift is built from say Tom Dearg to Meal Odhar (that is also downloadable) then access would be via Sunnyside followed be a walk down the Cluny and back up again at the end of the day.
If that is not attractive, and some here don’t like walking and skiing on the same day
then another option might be to run a minibus from the ticket office directly to Tom Dearg via the existing Sunnyside/Meal Odhar landrover track. The track would need to be upgraded, extended and perhaps ploughed, but that would be a lot less expensive than a new chair up Corrie Fionn.
Edited 2 times. Last edit at 13.49hrs Thu 19 Feb 15 by PeterS.