I will disagree a little bit, I will clay, lightly polish and wax the roof, but I will not do heavy swirl removal on it UNLESS I KNOW THE CUSTOMER MIGHT WANT THAT DONE (i.e. someone other than your average soccer mom, etc).
As far as protection goes, swirls do not factor into that equation. For the money I get paid and the time I spend, I feel the average person would get more out of me spending extra time on the panels you can see. Say for example I take 4 hours to detail the outside of an SUV. I would argue that to most average people, adding an extra coat of wax, polishing the wheels, making sure everything else is perfect, doing another polishing step, etc, is more important than de-swirling the roof.
Keeping more paint on the roof is not necessarily bad anyway. Why remove paint when you are 99% sure the customer does not care either way? Most of my customers-they do not care about swirls on the panel you CAN see.
:nixweiss
just my 2 cents.
I try to fit my service to match what the customer wants. Some might enjoy knowing the middle of their Excursion roof is de-swirled, most don't care. In that case, I'd rather keep the paint on there.