Before you read this post please keep in mind that I am not saying that this is the correct or only way to align your cue. I don't want to start any argument or controversy over what I am posting. I only present this in the hope that it might help someone futher their game as it has done for me and the other players I have shown it to. It may or may not work for you.
I have developed a system for aiming with the dominant eye that so far has proven very successful for myself and the few people that I have showed it to. I had for many years aimed with my chin centered over the cue paying careful attention to keep the tip of my nose pointed to the tip on the cue to maintain alignment. While this has worked well for me I more often than not had mild confidence problems with long distance cut shots. Even though I normally make these shots the mental struggle tended to mount over the course of a long tournament. I have tried finding different places to align my cue such as centered directly under my eye and various places between the center to my nose and even beyond. The results have been sporadic at best. In the end I have always returned to my cue centered under my chin for best results.
After a lot of less than productive alignment attempts it finally dawned on me that rather than one set position for the cue alignment in relation to the eye it might work better if the alignment changed with the angle and direction of the cut with the contact point on the cue ball as the determining factor. At first it was a difficult process because of the abstract factors required to determine the cue ball contact point then try to get the center of my eye aligned over that point while also trying to maintain the cue position required for the shot. It worked well but was more of a struggle than aligning under the chin. The method needed some kind of mechanical factor to simplify the process and make it stress free.
It took a couple hours for the light bulb to turn on but the results were well worth it. It occured to me that at least in my case as I am right eye dominant that a cue ball held at the center of my eye would cause the left edge to line up with the center of my nose and or chin and the right edge would line up with the outside corner of my eye. In other words the width of the cue ball was the perfect fit between the outside corner of my eye and the bridge of my nose. If I used those 3 points(nose,center of eye and outside corner) as a reference I would be able to quckily align the cue to position the center of my eye over the cue ball contact point for any cut angle from 0 to 90 degrees to the right or left.
If the cue was centered straight under the dominant eye and in the center of the cue ball it would line up perfect for a straight in shot as my eye would be over the contact point on the cue ball and object ball. This would be a zero angle cut. The diagram below shows eye placement of the dominant directly in line with the center of the cue, cue ball and object ball.
If I aligned the cue(Line AB) with the center of my chin (or nose) and through the center of the cue ball then the center of my eye(right eye in my case) would be aligned with the edge of the cue ball(right edge in my case as I am right eye dominant) and the left edge of the object ball (Line CD). This position would be perfect for a very thin cut to the right. The diagram below shows the cue centered over the nose(or chin) with the center of the dominant eye aligned with the right edge of the cue ball and left edge of the object ball.
If I aligned the cue halfway between my chin center or nose and the center of my eye it would be right for a 45 degree cut to the right. For any other angle to the right it is simply a matter of interpolation to come up with the correct placement of the cue from 0 to 90 degrees. The diagram below shows the cue about half way between the center of the eye and the center of the nose(or chin) while the center of the eye is aligned with the contact point on the cue ball and object ball. You might notice that this diagram is not lined up quite perfectly but that's because I'm not really proficient with using Paintbrush to draw diagrams.
For cuts to the left simply hold the cue at the center of the eye for a zero angle cut, halfway between the center and the outside corner for a 45 degree angle and at the outside corner of the eye for thin cuts to the left. Again interpolate for any angle between 0 to 45 and 45 to 90 degrees. The diagram below shows the cue centered over the outside of the eye with the center of the dominant eye aligned with the left edge of the cue ball and right edge of the object ball.
The beauty of the system is that I don't have to find the contact point on the cue ball as it will be automatically in place if I see the correct angle of the shot and align the cue to the right place between the bridge of my nose(or center of chin) and the outside corner of my eye.
For left eye dominant players all the positions would be reversed.
In practice:
1. I determine the cut angle of the shot
2. Align my body and eye for the shot
3. Determine the cue placement between the center of my eye and center of nose(chin) or outside corner of eye depending on cut direction
4. As you lean into the shot place cue at the proper position as determined in step 3 but also aligned with the center of the cue ball making adjustments for parallel english if used.
5. Shoot the shot as normal
For me this technique has not only improved my accuracy but has completely removed any confidence problems I had when shooting long cut shots. I no longer have to struggle mentally to determine the correct aim to complete the shot. Now I just line up the shot and shoot at the spot on the object ball that I determined before I lean into shooting position. It allows me to use a mechanical basis to eliminate the abstract components of my aim.
I can now fire shots into pockets(when not using english) to force the cue ball around the table whereas before there would be a good chance that it would jaw in the pocket if I risked shooting at that speed.
This system completely gets rid on any parallax problems but does have a couple caveats. For one being able to aim better doesn't do much to help other flaws you might have with your aim such as alignment, stroke errors or shooting too hard. You still have to make aim adjustments for speed and english. It also wouldn't help anyone who doesn't have a dominant eye and would require and adjustment for some one who had an unusually large or small face where the cue ball width didn't fit properly between the nose and outside corner of the eye. Additionally it might also be difficult to learn to get your cue aligned from the center to the outside of the eye.
I have developed a system for aiming with the dominant eye that so far has proven very successful for myself and the few people that I have showed it to. I had for many years aimed with my chin centered over the cue paying careful attention to keep the tip of my nose pointed to the tip on the cue to maintain alignment. While this has worked well for me I more often than not had mild confidence problems with long distance cut shots. Even though I normally make these shots the mental struggle tended to mount over the course of a long tournament. I have tried finding different places to align my cue such as centered directly under my eye and various places between the center to my nose and even beyond. The results have been sporadic at best. In the end I have always returned to my cue centered under my chin for best results.
After a lot of less than productive alignment attempts it finally dawned on me that rather than one set position for the cue alignment in relation to the eye it might work better if the alignment changed with the angle and direction of the cut with the contact point on the cue ball as the determining factor. At first it was a difficult process because of the abstract factors required to determine the cue ball contact point then try to get the center of my eye aligned over that point while also trying to maintain the cue position required for the shot. It worked well but was more of a struggle than aligning under the chin. The method needed some kind of mechanical factor to simplify the process and make it stress free.
It took a couple hours for the light bulb to turn on but the results were well worth it. It occured to me that at least in my case as I am right eye dominant that a cue ball held at the center of my eye would cause the left edge to line up with the center of my nose and or chin and the right edge would line up with the outside corner of my eye. In other words the width of the cue ball was the perfect fit between the outside corner of my eye and the bridge of my nose. If I used those 3 points(nose,center of eye and outside corner) as a reference I would be able to quckily align the cue to position the center of my eye over the cue ball contact point for any cut angle from 0 to 90 degrees to the right or left.
If the cue was centered straight under the dominant eye and in the center of the cue ball it would line up perfect for a straight in shot as my eye would be over the contact point on the cue ball and object ball. This would be a zero angle cut. The diagram below shows eye placement of the dominant directly in line with the center of the cue, cue ball and object ball.
If I aligned the cue(Line AB) with the center of my chin (or nose) and through the center of the cue ball then the center of my eye(right eye in my case) would be aligned with the edge of the cue ball(right edge in my case as I am right eye dominant) and the left edge of the object ball (Line CD). This position would be perfect for a very thin cut to the right. The diagram below shows the cue centered over the nose(or chin) with the center of the dominant eye aligned with the right edge of the cue ball and left edge of the object ball.
If I aligned the cue halfway between my chin center or nose and the center of my eye it would be right for a 45 degree cut to the right. For any other angle to the right it is simply a matter of interpolation to come up with the correct placement of the cue from 0 to 90 degrees. The diagram below shows the cue about half way between the center of the eye and the center of the nose(or chin) while the center of the eye is aligned with the contact point on the cue ball and object ball. You might notice that this diagram is not lined up quite perfectly but that's because I'm not really proficient with using Paintbrush to draw diagrams.
For cuts to the left simply hold the cue at the center of the eye for a zero angle cut, halfway between the center and the outside corner for a 45 degree angle and at the outside corner of the eye for thin cuts to the left. Again interpolate for any angle between 0 to 45 and 45 to 90 degrees. The diagram below shows the cue centered over the outside of the eye with the center of the dominant eye aligned with the left edge of the cue ball and right edge of the object ball.
The beauty of the system is that I don't have to find the contact point on the cue ball as it will be automatically in place if I see the correct angle of the shot and align the cue to the right place between the bridge of my nose(or center of chin) and the outside corner of my eye.
For left eye dominant players all the positions would be reversed.
In practice:
1. I determine the cut angle of the shot
2. Align my body and eye for the shot
3. Determine the cue placement between the center of my eye and center of nose(chin) or outside corner of eye depending on cut direction
4. As you lean into the shot place cue at the proper position as determined in step 3 but also aligned with the center of the cue ball making adjustments for parallel english if used.
5. Shoot the shot as normal
For me this technique has not only improved my accuracy but has completely removed any confidence problems I had when shooting long cut shots. I no longer have to struggle mentally to determine the correct aim to complete the shot. Now I just line up the shot and shoot at the spot on the object ball that I determined before I lean into shooting position. It allows me to use a mechanical basis to eliminate the abstract components of my aim.
I can now fire shots into pockets(when not using english) to force the cue ball around the table whereas before there would be a good chance that it would jaw in the pocket if I risked shooting at that speed.
This system completely gets rid on any parallax problems but does have a couple caveats. For one being able to aim better doesn't do much to help other flaws you might have with your aim such as alignment, stroke errors or shooting too hard. You still have to make aim adjustments for speed and english. It also wouldn't help anyone who doesn't have a dominant eye and would require and adjustment for some one who had an unusually large or small face where the cue ball width didn't fit properly between the nose and outside corner of the eye. Additionally it might also be difficult to learn to get your cue aligned from the center to the outside of the eye.