Sorry but I would never ever recommend this unless the lens is slow and only goes to f4.
The ideal aperture is around f/5.6. For skiing, I like it lower, around f/11 or so, but that's just me.
As for scene file, shoot semi-flat, but not too flat. Stop down until the image is bright as possible while still having snow detail.
In post, drop the mids, and bump the highs to compensate. Raise the black pedestal if necessary, because crushed blacks in flat light looks even more awful than it does in good light.