I reversed yesterday's course so I could do some more 15-point distance with Belle. Note that I moved the tunnel to the left side so that it is still the first obstacle.
The narration on the video says just about everything I can think of regarding this jumpers course.
As you watch, notice that with Belle, if I am moving toward the right side of the course, I cause varying degrees of curving either right out of the tunnel or after the first jump. Also, Belle interprets my turn command between 16 & 17 to mean she is to turn left after 17.
With Dusty, the 8/12/15 jump is our biggest problem. I say "come" as he takes the jump before, and he interprets it literally and comes to me instead of taking the jump.