Here is one reason why today's tour players are accurate:
Man it would be nice to have one of those! .25 degree accuracy!
I have been hitting a lot of range balls lately and I figured out that some of my clubs were pulling the ball and yep when I checked the lie angle on my Golfworks gauge those clubs were too upright. It is a pain in the butt to bend and check repeatedly with that setup and my accuracy is not so good maybe within a half degree depending on how careful I am.
Anyway I was messing up my swing by practicing compensations for the lie angle with different clubs. Then on the course: 8 iron right of the green and next hole 6 iron way left. Stupid! Also I found that if while hitting balls I managed to somewhat groove in a swing that would hit my driver straight then when I switched to my 3 wood or hybrid club I would hook the snot out of it. I adjusted the driver shaft to close the face a couple of notches and now I have a little better chance of making a consistent swing... I was really making it hard on myself by being lazy about checking my clubs.
One other thing that I have found that I think is interesting is my experimenting with stance. I found that if I close my driver stance a bit and align my hips and shoulders with the stance line I can hit a nice draw on target. My problem in the past was that I was pulling my trail foot back to close the stance but I was not aligning the shoulders and hips with the stance which produced poor results; huge pull hooks ob left and big old slices ob right. LOL that shot pattern is the path to rounds with double digit penalty strokes!
For me there does not seem to be anything better then pounding a lot of balls on the range. Eventually I actually figure some stuff out that might be useful...