The Drive to 300 Yards: Using 3D to get a more powerful golf swing

I'm focusing on fitness this month. I’ve been working out, but nothing golf-specific. I need more clubhead speed to give myself a little more margin for error to hit 300 yards.
                              I'm focusing on fitness this month. I’ve been working out, but nothing golf-specific. I need more clubhead speed to give myself a little more margin for error to hit 300 yards.

Source: The Drive to 300 Yards: Using 3D to get a more powerful golf swing