Originally Posted by JayT
So on a ski that was 143 - 116 - 134 and a twin-tip you'd go for a 130 skin vs. 115 then?
Yeah, though I think a 125 (BD STS) would work well too. You'd have about 5mm of exposed ski on each side of the skin at the tail, which is nothing.
OTOH, a 115 would work, but I'd opt for the better coverage and traction of the larger skin. That's just me. The problems with narrower skins start when you go sidehill on harder snow. And you can go steeper easier with the wider skins (more skin, less smooth base) but that doesn't matter to a lot of people. So if you can live with the limitations, or even not be affected by them, then go with the 115.