Wow! Looking very good, nice & shiny, a job well done
2 and a half hours just for one side sounds about right using a DA. It's better to take your time & not rush it for best results.
I would've thought you could use the same method to remove the swirls on your roof & bonnet though. As long as you continue to use careful washing methods it shouldn't be necessary to compound again once done.
I'm no expert, but I managed to remove all the swirls from my (now previous) car's black paint, and after a year of countless washes was unable to see any newly inflicted marks even in bright sunshine.
Gotta love the junkman videos, he's quite funny, but also explains it very well. Without them I doubt I would've taken the plunge into machine polishing.
I just picked up a 2nd hand White ST today and although it looks OK from a distance closer inspection in the sunshine revealed swirl marks all over, which I expected to be honest.
Can't wait to get my polisher on it to get the shine back