Next time you find yourself on a scree field, also known as a talus slope keep in mind that it will only ever repose to between 30-45 degrees. I have always found the easiest (and fastest) method of descent is to keep both feet together, then jump, and turn in midair just as though turning while skiiing a steep slope.
This method invariably results in speed, excellent control and an adrenalin boost that will leave you grinning for hours. Try it , you'll like it. Lovin' the RR