Hey
Keith, I am in the mood to type so let me try this one and if I miss something, help me out.
I think the first thing you need to do is know the rails. Position is alot easier when you are comfortable with them. A few examples. When you need to go back down table, there are certain shots that if you hit a certain rail, you will ALWAYS be coming in line for your next shot. These are much eaiser then trying to draw and follow, when a center ball hit will be better. English does funny things, but also center ball, or just high low english is the first choice. I am sure you know that the lower you hit on the cue ball, the wider the angle the cue ball takes. This is good to know when you come off rails, you can decide weather you want to go one rail or two for your next shot, or go above or under a ball.
I would say that once shot making is no longer an issue (for consistnecy) position play is the next most important aspect of a good game. Pros are so good, cause they have easy shots to shoot.
I would recomend doing drills for this. Robert byrnes power workout vol. 5 is really good. There is a section on ten drills for position play. The other is the LESSON by the monk. If you do all the drills in this book, you will be very cometitive. I would be better is I wasn't so lazy on drills.
And remember, the saying that everyone in here says is so so so so true, that bad practice is worse then no practice at all.
Jordan