I just bought a long throw DA to begin my detailing journey, in another word, I am a noob. 
today is my first time to do a machine polishing. I have used Ultimate polish + LC white polishing pad combo and practiced on my car bonnet/hood(sort of grey medallion color). Slow arm speed with 5 speed
While i am able to get most of the swirls and scratches out, but I keep on getting some kind of fine swirls that look like holograms on the hood after my IPA wipedown.
I went back and re-polish the paint with very light pressure while using the same polish, pad and speed with 4 passes. Most of the hologram is missing but still appears in some places. Those marring isnt obvious, even under the sun. I need some efforts to notice them
i've tried to search around youtube and i found 2 vid that closely show what i observed on my paint
https://www.youtube.com/watch?v=AiVM6oVB1Hw
https://www.youtube.com/watch?v=ZvkTp4MzYNk&spfreload=10
could anyone kindly help troubleshooting what went wrong? polishing or buffing technique(Towel marred)? How to differentiate the two? or just polish residue?

today is my first time to do a machine polishing. I have used Ultimate polish + LC white polishing pad combo and practiced on my car bonnet/hood(sort of grey medallion color). Slow arm speed with 5 speed
While i am able to get most of the swirls and scratches out, but I keep on getting some kind of fine swirls that look like holograms on the hood after my IPA wipedown.
I went back and re-polish the paint with very light pressure while using the same polish, pad and speed with 4 passes. Most of the hologram is missing but still appears in some places. Those marring isnt obvious, even under the sun. I need some efforts to notice them
i've tried to search around youtube and i found 2 vid that closely show what i observed on my paint
https://www.youtube.com/watch?v=AiVM6oVB1Hw
https://www.youtube.com/watch?v=ZvkTp4MzYNk&spfreload=10
could anyone kindly help troubleshooting what went wrong? polishing or buffing technique(Towel marred)? How to differentiate the two? or just polish residue?