Here is a video clip of Olga Chaiko working with her young Border Collie Yankee. This was shot back in spring 2006.

They are working on distraction training. Hopefully Olga will eloborate online with a comment. 

In this lesson Freddy works the triple, as in the previous video. But there biggest issue at the moment is distraction. Olga then discusses it all in detail.

When she starts talking about "the turn" she is referring to Becky and Freddy walking back to the start position and they do a turn at that point.