To determine if the wind direction allows for hook shots
or not, use this guide. First look at wind strength. Then look
at the wind's angle. Note by 'angle' I don't mean boomer's angle,
I mean the angle of the little red arrow that your wind indicator
uses to show wind direction.
90 = wind straight up or down
45 = wind diagonal up/against or down/against.
0 = wind pointing perfectly left or right.
One trick you can use to judge the wind direction if you have
some time between turns: Move boomer's angle to the angle
indicated by the chart. If boomer's arrow is pointing at an
angle that appears to be more horizontal than the wind's direction
then you will get a hook. If the angle appears more vertical than
what you're seeing on the wind indicator, it won't hook.

Wind / Wind Angle (direction)
1 / 0
2 / 60
3 / 70
4 / 75
5 / 78.5
6 / 80
7 / 81.8
8 / 82.8
9 / 83.6
10 / 84.3
15 / 86.2
20 / 87
25 / 87.7

Credit to Mauvecow, reposted by shotgunkelly. Found on gbgl-hq.