In reply to Mick Ryan - UKClimbing.com:
At the end fo the day I was reviewing the curves, not the astros. The idea behind the tapering may be the same as for astro nuts, but in my experiance it doesn't work on the curves, and I don't have any astros, so wouldn't know, and hence I didn't talk about how they are designed to work in flares but don't
I was just trying to give an overall description of how well they perform, as opposed to a super technical description of them, or how they
should perform