courteneyfish:I find it varies on which clubs and balls you use.
This^^!
As an example, I did not add anything for reasonable elevation rises with G20s and Tour-SD balls IF I could shoot w/o backspin. They would land shorter but roll up nicely.
Now, with lvl33 Callies, I have to count the yards upwards (and down, too), and spin influences length more than before.