In reply to Fat_old_climber:
I haven't been up recently, so I don't know what the snow's looking like. But when the big freeze was on, I had a suuperb day walking up Sgor Gaoith from Glen Feshie and skiing back down. With care you could probably ski from the head of Gleann Einich, traversing across to the base of one of the routes on that side of Sgor Gaoith? This would certainly get you a route to yourself.
But as I say, I don't know where the snow-line is just now. The other thing that might be worth a try, and would keep you high, would be to walk up Braigh Riabhach, then ski across to Garbh Coire Mor and do one of the routes there.
Obviously avalanche and cornice hazard might make either of these suggestions completely impossible. I emphasise that I am NOT saying this on the basis of a recent look at conditions.