Today, I ran Exercise Two with Belle and Dusty.
Since 2 to 3 is a 270, my preference was to stay in the box and try to produce as tight a line as possible by pulling my dog from 2 to 3. After sending the dog over 4, I did a rear cross. I finally tried a front cross between 3 and 4 with Dusty, and it worked quite well once I got my timing right.
I normally opt for the simplest handling solution, so I would probably never think to do a front cross here which is unfortunate. When I went out a second time to work on this exercise, I realized I had to wait for Belle to pass me by in order to do a rear cross. Rule of Thumb: If you have to wait in order to do a rear cross, perhaps you should be doing a front cross.
I used four different handling combinations at 6 and 7:
1. FX between 6 & 7 and a second FX to wrap the dog back into the gap. This worked with Belle, but with Dusty it was not a very good choice.
2. Send over 6 and move backward to threadle the dog over 7, and then move back again to threadle the dog to the tunnel. (I.e., I had Belle and Dusty run across my feet to the tunnel.)
3. FX between 6 & 7, and then RX 7, wrapping the dog left to the tunnel. I felt this was a faster option than number 2 above. The only problem was that I felt like was signaling the RX from a very strange position.
4. Send over 6 and move backward to threadle the dog over 7 and execute a post turn to wrap him left to the tunnel. Once I figured out how I had to move, this became my favorite way to handle 6-8. I also think it was the fastest.
The threadle/post handling described in #4 above are in this video: