|[regarding Pivot Slips] "I do not use them."|
The important question isn't so much whether you use them or not, BigE--that's a matter of personal preference. The real question is, "Can you do them?" Do you have the skill to do them?
I assume that you do. So my next question would be, "are you glad that you have the skill needed to do pivot slips (even if you rarely choose to do them)?" Or would you prefer that you didn't have that skill?
And assuming that you value your own ability in this matter, my final question is, "so how do you help your students develop this valuable skill?"
In this case, by the way, there can be little argument about most students' inability to do accurate pivot slips--as Ric (VailSnoPro) demonstrates in the animation CGeib linked to. As many skiers and instructors here at EpicSki will attest, doing them right is not easy. It takes. . . a lot of skill!
[PS--to all, regarding pivot slips--they are a very clear demonstration of the leg steering we've discussed, in an exaggerated fashion (legs rotate nearly 180 degrees, or as far as possible, in the hip sockets, like turning a car's steering wheel all the way from lock to lock). But they are much more than that. Unlike Weems (who clearly doesn't like me!), I love pivot slips, for many reasons. As CGeib suggests, there are few activities more effective at helping us find the sensation of "neutral"--that critical stance/attitude/sensation/alignment/balance/whatever at the moment a turn starts (and also, therefore, at the moment a turn ends)--the moment of edge release. I'll leave it here for now, but this concept of "neutral" is something that might be well worth a deeper exploration sometime. . . .]