Brendan
When you said 'off-centre stricking' I took that to mean applying side, which is what it normally means.
With pure top or bottom you are still striking the centre-line of the cueball (vertical centre line) and the line of aim still applies. When you strike purely centre-ball in the vertical it's the same line of aim as when you apply top or bottom on the vertical centre line.
This will, however, change the angle the cueball takes off at when it strikes the object ball but it won't change the direction the object ball takes on contact with the cueball.
Terry
When you said 'off-centre stricking' I took that to mean applying side, which is what it normally means.
With pure top or bottom you are still striking the centre-line of the cueball (vertical centre line) and the line of aim still applies. When you strike purely centre-ball in the vertical it's the same line of aim as when you apply top or bottom on the vertical centre line.
This will, however, change the angle the cueball takes off at when it strikes the object ball but it won't change the direction the object ball takes on contact with the cueball.
Terry
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