When you go around in the summer (or spring) and test climber trees, take a notepad and write down which "settings" you use for each tree. Most all climbers have settings (ie tree width) and I have found if you write them down, and create a sheet with info for each tree, you make life easier when you get to the tree.
Example info for each tree:
Winds:S,SW,W ( I will be using Greg H's tactic of wind degrees this year)
Settings: Top-4 hole Bottom-2nd hole
I have finally mastered the art of making adjustments while in the tree. First the upper portion then the lower. Just make sure that they are connected and that you are wearing a safety harness. Actually, i don't recommend this at all. I'm sure my luck will run out and i will be stuck up in a tree staring down at the lower portion of my climber.