Not all.
For instance, fractional alignments produce the same angle cuts (e.g., a half ball hit produces a 30-degree cut) at any CB/OB distance - so long as you remember that the cut angle is measured from the CB-to-ghost ball line.
And since CTE is derived from fractional aiming, it probably "works" at all distances too.
pj
chgo
Thanks for the funny post. I've never heard of the GB fraction method before. I thought the fraction gave the GB position.
Set up a 30* cut with less than an inch separation. A half ball hit won't do squat.