I'm a lackluster driver and just passed my first full year in this expensive amazing hobby
. I ran sport 1 for 2 track days, sports 2 for 1 day, and race from here on out.
My thinking was why would I would to hone and develop my skills, while still having stabilitrack engaged, which would further mask my mistakes and potentially even encourage furthering bad habits. IMO there is not much of a difference. Try it out on a track your most comfortable and just take it back a notch to start.
The biggest jump I believe is from PTM to full off which I am wanting to do but still not sure if I'm ready. When I do I will scale it back a little and then work back up to pace!