Since I know very little about herding, I do not know exactly what the evaluator was looking for during the test. I know she looked for sustained interest in the sheep and she looked for herding behavior as opposed to strictly prey drive behaviour. This particular evaluator had strict criteria about what she was looking for and very few dogs passed the test. I think there were over 30 dogs tested and only 5 or 6 passed. Rundle had enough interest in the sheep that day to earn himself one of those passes.
Herding is an interesting dog activity but one that is difficult to pursue unless you have regular access to stock and a trainer. Although this was fun to try out and Rundle showed some interest, it is likely not anything I will continue with. Unless you are working with sheep often, the dog is not really going to learn what is expected of them. Although herding does have a natural instinct component, there are also rules that a dog must learn, and that doesn't always just involves chasing sheep in a round pen. So, it was something fun to try and a new experience for Rundle.
My friend Jo took some video of Rundle with the sheep. This clip as near the end of our test and you can see Rundle start to get a bit distracted - maybe from the pressure of "rules" (you can see that with the use of the flag) or not knowing what was expected of him, or maybe he was just getting tired. It's hard work trying out new things.