That's awesome Irving!
I tried doing that with mine, until she nearly killed me several times. She'd randomly stop to sniff something on the sidewalk, always directly in front of me. For the most part she was good though, tons of energy and helped me keep pace. I used keywords such as "lets go", "slow", "stop" and she was able to respond to them quite well. If she'd start bolting off, slow would get her to ease up a bit and focus on me.