RE: Why oh Why?
I reckon all of us just have those days. I had one this past weekend, unfortunately it was at the GA state championship. For some reason, I just couldn't get in the zone. I shot 78% on a course that I should have shot 85% on. The next day, even after hanging my jacket on the first 5 (out of 20) shots (then throwing my jacket on the trail and leaving it), I pulled it up to 81% in a light rain. Still wasn't dead on, but much better than the day before.
Don't let it bug you. When you are having a really off day, try laying your bow down for an hour or two. If it's still bad, leave it alone for a day or two. Works for me.
Chad