What width skin would work best with these...
What width skin would work best with these skis - the 186 cm (138-100-123)
You really only need and use the plush under foot so 100cm would work.
I am a noobie so I am a bit hesitant to disagree w/ Noah Howell, but recently I was skinning up and had to traverse in a few places on tracked show. This caused the edges of my skis to be the main contact points with the snow and I was slipping a ton because my skins were too narrow for my ski. I can't imagine why you wouldn't want your skin to cover as much of the ski as possible to give you lots of traction. I would go with the widest measurement.