An American radio team decided to investigate how this method feasible. They came up with interesting findings:
1. this technique does not work on plastic corks
2. heel shoes should be solid (not applicable on sneakers)
3. heel must not be too high because then changes the angle of attack in the bottle wall, in other words, the angle in relation to the bottle wall must be 90 degrees
4. bottle, of course, must be laid horizontally - you can not hit it on the floor!