It's often useful to walk over to the object ball to check clearances. I do it with long thin ones where a few degrees error becomes the wrong shot. Players usually opt to miss these deliberately by over cutting them. Different priorities.I've never used contact point aiming systems but keeping track of the contact point can be done by not taking your eyes off of it while walking back to the CB, getting down and shooting. Although I've done it that way I am able to recognize the contact point after looking away from it when I go back and get down on the shot. It seems to be some sort of mental/visual persistence that developed after months of shooting 8 hrs a day when I was first learning. I do stare at the contact point when standing on the cut line some times but don't pay any attention to any markings on the OB, and I often don't go to the cut line - I just walk over to the CB, get down on the shot and look at the OB, see the contact point and cut it in. It is kinda automatic. I've been able to teach it to a couple students, telling them they just need to learn to visualize it.
Anyway, arming yourself with the image of <the object ball orientation> and <the angle through the desired aperture>, is big in the process.