Vilas,
It's not my opinion, its SOP for the Boeing and Douglas types I have operated and have quite a reasonable amount of experience on.
In over 30 years of professional flying I have never seen anyone do this. (steer with their heels)
You are unable to provide any information on this 'Boeing recommended procedure' because there is none.
Further more you are now attempting to reference Airbus procedures when your example was based on the 747 Classic.
You seem a little confused ?