I either do it front lead leg or rear but we have to do alot of repetitions on just using the front leg because its faster to use. I use outside to in, bent but coming down locked. I did that in a tournament as a red belt, two boards then and I was amazed how easy. Imagine a face, ouch. We don't do that in class in sparring. Can't pull it and damage too great. I like the 360 axe. BTW, flexibility can be learned/trained at any age unless you have damage that precludes it. Just takes time. (and a little suffering) TW