Working today Ace alerted and took off towards the work truck. I saw several tourists and a mid-size dog on the far side, and Ace was rounding the truck. (tourists had let their dog run and came into the yard I was mowing, Ace was chasing out.)
I called Ace, vibrated his collar to break his focus (vibrate works best for both) as I called him to a heel. Ace came running back to me with a half grown border collie on his tail. Ace wanted to turn on it but didn't.
When Ace ran past me to turn into his heel I stepped in front of the pup and grabbed Ace's collar. I was blocking the pup from getting closer when a young boy showed up. While his mom stood 60ft away watching, the boy kept fumbling trying to catch the pup but it kept darting away and trying to get to Ace.
So much commotion was setting off Ace's prey drive, realizing I was pulling back on Ace's collar triggering him more, and seeing the boy couldn't catch his pup, I gave Ace his down command; stepped away several feet; looked back to ensure Ace was down I saw he was half-up ready to go, I told him "No" giving his hand and verbal signal. Ace dropped back to his down, and I was proceeding to get the pup myself when halfway to them the boy finally got his pup.
Walked to the truck, back to Ace, and walked him in heel to the truck, putting him in it in case they let their dog run again.
As keyed up as Ace was he obeyed without any correction other than a verbal no.
I learned to start taking charge of the situations, and to continue maintaining a cool head, because if I let myself get mad or upset either of them are ready to go. From his grooming behavior, and being more relaxed than usual on the way home, it appears he is getting more confidence I will handle the situations.
I try to use everyday occurences as training sessions.
The previous days "training" helped with today's incident.
Cows are still tearing through our fence and getting into our yard.
Yesterday they got in 4 times.
I called the crew into heel as I went out the door, they were doing well until they saw the cow. Ace broke first, and was halfway to it before I was able to vibrate his collar, verbally correct them and get them back into heel. I walked them another 20ft before I released them to run it out (premack for them). Lexi got halfway to it and stopped to look back for reasurrance but was still hesitant.
By the last time she understood it was ok to go when told. They both held a good heel until released after the first time.
Cows got in 4 times again today as well and lexi maintained a good heel for my wife until she was told to go to work.
Learning if they maintain commands something fun will usually follow.