Hi Gregg,
I Like your first image with pan...good and steady, textbook technique.
Here is my version of a pan that I did to try and capture a feeling...I wanted something to create a great sense of a slip slide motion. I moved the camera with the subject but slightly off axis to experiment with a variant angle. I shot various riders as they came along and this was the one I found worked as I had hoped. "Time Messenger".
Peter