When I'm playing my best and find myself in contention late on Sundays, it's usually when I'm not thinking about my swing, but rather trusting my setup and smoothly pulling the trigger. I won't completely rely on feel - I like to keep a few images in the back of my mind to make sure that I get the most out of my driver, irons and wedges.
When it comes to hitting solid drives, the secret is to swing within yourself. I know that sounds like a cliche, but it's true. If you swing at 100 miles per hour and hit it on the toe, you won't hit the ball as far as you would with an 80-mph swing that catches the ball in the center of the clubface.