I think that one of the most important things that you can do is to make sure you stay calm, I've noticed it usually works to my advantage to bring someone in with me who isn't pumped full of adrenaline, I don't know why but it seems to make is 10,000 times harder to find blood if your pumped up with adrenaline, so I try to call someone to come help me, this also serves a double purpose in that by the time the help gets there more time has passed. I know I find blood a lot better for someone else when they call me than when I'm tracking it by myself, post shot.

Just my .02

Ryan.