I tried CTE again

BC21

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Additional info on cut angles or aim points needed: https://billiards.colostate.edu/faq/aiming/lines-of-aim/

Good information. I had never seen this particular page before. With the spot shot illustrated on this linked page I've used a halfball hit as an example in this quick sketch to show my point. CIT and SIT are ignored.

picture.php


If the cb is anywhere within the margin of error window (which is 3.6° in this example) then aiming for a halfball hit will pocket the ball. You can manipulate the shot even more with spin, widening that 3.6° angle range considerably, making it possible to use one aim line/reference to accommodate several shot angles thicker or thinner than 30°. This was my point when I posted that we rarely have to be precise enough to hit that 1° out of 90 in order to pocket a ball.

Notice how sharp you have to be if you are using ghostball or contact points. You have to visualize the ghostball location within +/- 0.06" for this particular shot angle. For the ob contact point you have to be able to distinguish the exact point of contact within +/- 0.035". This is why I think it's easier to use well-defined fractional aim points, points of reference, on the ob. I wish I had started with fractional aiming 30+ years ago! But I realize everyone is different and we all have our own ways and opinions on perfecting aiming or learning to aim.
 
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