You will never ever be able to align correctly all the time if you don't know if you aim with both eyes ( binocular vision) or with one eye! The picture you perceive has to be true or you won't get what you are looking for!
In case you aim with one eye, which most of the players do, you have to know the perfect position for your dominant eye!
I am a righty and left eye dominant !
It took me a decade!!! To find the specific eye position for me personally!
I play at semi pro level! My high run in straight pool is 132, and
8 consecutive racks in 9ball were my highest runs...
I developped a tool that helps any player ( no matter if one eye dominant or having binocular vision)
I see the shot perfect when having my left eye over the shaft and having my head straight OR having the cue CENTERED under my chin while having my head tilted slightly to the right!!!
Anyone I ever worked with said that this tool helped him more than anything else regarding theor exye position!!
Feel free to watch the video:
http://youtu.be/CBxA3pe-PNU
Ekkes