"Effortless power" feels "effortless" but do demand effort, which moves the club(head) effectively, efficiently and precisely and randers it "powerful".
"Powerless effort" feels "powerful", yet the effort/intention is directed toward the ball (or/and its behavior), which usually causes the opposite of the above to the clubhead movement and randers it "powerless".
...which boils down again to technique - getting the job done with the least amount of resources.
Threaded Mode
