I know I've posted this before on these threads but this story still cracks me up.
The twins were barely 2 and we were at the beach, and had to cross a MAJOR highway at a traffic light to get to the beach (US Rte. 1... 3 lanes each direction). If one of them had bolted they'd have been smooshed by opposing traffic. I was worried about the what-ifs even though they weren't bolters, and we already looked like camels with all our beach gear there was no way we could dart after them. So my mom got harnesses for them - those old fashioned chest harness (look like the top of liederhosen!). Well they'd never been on leashes before and the kids thought it was a riot. The light turned green and as soon as we entered the loooooong crosswalk they began straining on the leashes and barking like dogs. OMG I was absolutely morified. MORTIFIED! But we made it safely across and back.
Dh and I still crack up about this. I've used a Maya ring sling once or twice too, but mostly we just teach them not to run and for us it works. So far never with our toddler (2) but never say never. Whatever works and is done respectfully.