I've killed many after 8:00 AM so you shouldn't have any problem. You will just not get that gobbling sunrise, fly down kackle, or tom flying right into your decoy setup. Sneak in and setup quitely and blast them with a few yelps and just see what happens.

Coming straight off of work without sleep, your only problem will be those power naps your brain will be asking for!!!!

Lefty Llewellyn