In reply to victorclimber:
> (In reply to pillar) have a nice lunch at Glen Brittle ,take a bivi sac ,small stove ,tea etc any food for a couple of days ,we made some sandwiches..get round onto the Ridge later in the day wander along and down to Corrie A grundda,spend the night near the water ,brewing ,more brewing in morning taking on plenty of fluid,up to TD Gap and steady away..we were on it on the exact day of the first crossing ,and found a good snow patch for water after the Inn Pin ..just keep steady away .so long as you have some water you should do it ok..
That's how I was suggesting. Except I would start slightly earlier and do the TD gap in the evening. It's hard getting out of bed in the cold, maybe damp and trying the TD gap, unless you've a grade in hand. Having done it in the evening and abbed back down into to get back to Coire Ghrunnda, then you can go the easy way up Alastair in the morning and not miss out anything. And see how far you get - Fionn Coire is good. More water and a short day to finish. You can even get home that night if you live in Scotland.