One of the reasons Golfers fail to execute a Centered Pivot is because it is far easier to Slide than to Twist. Most Golfers are too lazy to Twist. It takes work.
And so they Slide instead.
Okie - dead right IMO!!
Percy Boomer said something like the "pivot is a turn and then a TWIST"...turn on the backstroke and a twist on the downswing.... there is a reason why the put spikes in the shoes.... when you twist...you need them...'cos we really use planet earth...