My technique is a little different. First I'll start beyond the chickens so that they're between me and their run. I'll do a slow, soft clap for a few seconds to alert them that's it's time to return home. I'm usually wearing garden gloves so it's more like a thud than a clap. That usually gets them moving in the right direction. Then I follow them, holding a leaf rake which I use as an extension of my arms to help corral them to the run entrance. For the most part, they stay ahead of me and the rake, but if need be I'll give them a gentle tap on their rear and then they scurry ahead. They usually stay in a group which makes it easier for me (if they ever conspire to run in different directions, my system would be destroyed, haha). This usually is very effective, but occasionally one will miss the entrance so then I just have to follow her around the run and she'll go in on the second pass by. Once they're all in, sometimes I'll reward them with corn or grubs, but not as a rule. Anyhow, they're less than a year old and I've only been doing this for about three months, but so far so good.
I’m showing this post to the enabling husband that encouraged me to get the hatching eggs. I’m still looking at my foundation forms almost half finished, and my wall panels piled up around the trailer... but I do have two glorious and complete chicken tractors... soon to be four if I have my way! House 
not so much...
