Reading all these replies has me literally laughing out loud. Great topic. When my current lab was a pup I ran with her. she was excited and I was excited. But I figured out I rarely shot anything while running with her. I've also figured out that I'm only looking for 2-3 roosters. It doesn't have to be the first 3 we encounter. Now I can control my lab quite easily with the tone on her e-collar. But a couple times a year, she gets crazy and it's her hard to slow her down. I've figured out that when she does that there's probably a bunch of birds right in front of us. I've also figured out if there's a bunch of birds right in front of us, they will probably flush JUST out of range.
Moral to the story is, I'm not running anymore. If a bird runs out the other end or flushes out of range? That's a bird I wasn't going to get anyway. I just need 3 roosters to sit each day and I'm done.