It's been about a month since I began working on a running A-frame with Belle. She is consistently hitting inside the box with all four feet. I have been unable to get her to hit two or three inches lower in the box by using a stride regulator, so I decided to not use it for the time being. Since Belle hits the yellow even when the A-frame is in the middle of a sequence, I decided to start fading the PVC box. This morning I replaced the top pipe of the PVC box with two shorter lengths so that there is a gap in the middle.
I ran Belle once over the A-frame with a whole box, and then replaced it with the one with the gap at the top. The first time, I had her do the A-frame from a sit stay and just sent her to a hoop afterward. Since that worked, I started sequencing work. Unfortunately, I didn't press the button hard enough with my gloved thumb, and the video camera wasn't running. I'm pretty sure she got four feet in the yellow each time though.
I also had Belle run across the dogwalk once and it was beautiful. I have decided to use "easy" as she approaches the down ramp to remind her to run through the yellow and not jump. I realize this makes Belle's dogwalk not truly independent, but it is a vast improvement over her TOTO dogwalk.
I ran two more A-frames with Belle so I would have some video to analyze. Here are our efforts.