The diagram illustrates the change in shooting distance versus the horizontal distance.
Let's look at the "red" problem.
We are in a stand 20ft up the tree shooting at a target 30yds away measured from the base of the tree @ a 45 degree angle.
The distance from you to the target is measured @ 27 2/3 yds.

The horizontal distance is 22 1/3 yds.

What pin do you use?
UpHill
Downhill
OK,
We will use the "gray" problem.

We are on a hill, 20ft up a tree, shooting down the hill at a target 30yds away as measured from the base of the tree @
a 45 degree angle.

This distance as measured from your position in the tree is 35 yds.

The horizontal distance is 21 yds.

What pin do you use?
45 slant
22 degree slant
The generally accepted answer is to use the horizontal distance.
Trial and error before the season should be your method IMO.
Let's discuss the "blue downhill" problem which is much more likely to happen.

You're 20ft up a tree, the deer is
30yds from the base of the tree, the distance measured from your position using a range finder is 33yds and the horizontal distance is 21yds.
That's a whopping
12yds variance.

Which pin do you use?
.
(c) RedHawk, Inc. 2012
Without the graphs:

Bowhunter is in a tree.
It's 20ft to his shoulder.
We are shooting 30 yds, downhill @ a 45 >
    measured distance from base of tree is
30yds
    using a rangefinder from the elevated position the distance is
35 yards
    the horizontal distance is
26yds
Untitled Page
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