Bud, here is a diagram I made just to illustrate ILE, OLF and Up-Unweight Extention IMHO offcouse. These are the typical principal models for each case as far as I understand them and how the CoM moves in the vertical plane. Anyone of these can be mixed together at any rate. The diagram also tries to illustrate that extention does not always mean up as in the OLF case. There we have the lateral component in extention. Its also clear that if we whish for bigger edge agles in the OLF case, as illustrated in the ILF case, the CoM will be moving up a bit but not as much as in ILF.
Care to explain the last illustration?
I don't understand it.
Also, I don't agree with most notion here about up unweight and carving. Expecially in the context of spending energy. But I might do another up unweight than thought of by Rick.
When I up unweight I just keep the outer leg extension and the body moves up. Then as I reach towards the center point, I become slightly weightless and gets a nice relaxation of the legs. Then when it's time to hook up the skis when the feet have passed, I keep the extension until having set the edge and at that time I might bend the leg slightly so that it works in damper mode.
Skiing like this is quite effortless and works for all inclinations (tested to 45%). I think the body moves exactly like the ILE in the picture above.
When I down unweight I feel that under transition both legs keep burning in the latter part of the run. Almost like no-unweight. Also, the weighted extension phase is quite difficult and also draining energy. The body is moving exactly like OLF in the picture. Down unweighting works much better for me in steep terrain than in shallow stuff. Also between gates it feels quite natural. It seems like the transition gets shorter and more unweighted at high speed.
Arc to arc, easy sunday ride: up unweight (by keeping outer leg stiff).
Arc to arc, fast and less completed arcs, or fast and steep: down unweight.
Now I've gotta read the thread again to see if I've missed something.
Btw, I tried out ILE last week. I did some focused runs to understand the feeling. I was intrigued by how different it felt. I liked it and I must experiment with it more next season. In what situations is ILE best used?