I'm not really interested in where you actually hit the CB. I'm more interested in where you are aiming at. So if you want maximum draw for example where do you want to aim (with the center of the tip).
We know that the center of your tip is farther from center than the part of your tip that contacts the ball, but we can't know exactly what that looks like to you because your point of view probably isn't the same as ours (your head is higher or lower over the stick, or its more to one side than the other, or it's closer to or farther from the tip, or your eyes are closer/farther from your chin, etc.).
On top of that, the difference between maximum draw and miscueing is a very small distance, so you need to be very precise with your tip placement - which means you should learn where your tip is contacting the ball.
If you want to know where to aim the center of your tip for maximum spin (not just draw), then you should take the advice offered to you and experiment with a striped ball, checking the chalk marks to see how close you actually get to the edge of the stripe and remembering how it looked to you.
pj
chgo