Clubhead speed is simply a function of loose wrists and hands coupled with the full turn of the shoulders while remaining balanced with minimum use of the arms.
A lot of folks can say alot, but if you can't learn to do the above, forget it and settle for 200 yard drives.
If you can't give up control to get control, forget it.
No long dissertations here, they are not necessary and only serve to promote self flagellation.