A lot of people... when their knees go in, they use the cue to drive the knees wide... Their foot comes into a good arch; so that's a really great cue. However, if you drive your knees real far wide... you just become unstable. So that whole 'drive the knees wide' only works to a point because if you drive the knees too far wide then you just become unstable in other positions... on the outside of the feet.