I already have natural speed, which I don't need to work on, so in training I've been working more on my endurance.
The way I see it, thinking about the position of the club during the swing is about the worst way to play golf. It makes you tight and defensive, which kills your natural speed and rhythm. Although there's obvious value to minding your technique, at best you'll play an OK round. Where's the fun in that? Rickie Fowler