Just got done a marathon detail session. At least for me. 5:30am to 1:15pm. Used Zanio system this week but still have swirls and scratches all over car. Just not experienced enough to correct - I even have rupes polisher but too afraid to use it.
You just have to take a leap of faith with the polisher. You will learn a lot very quickly. I am very new to detailing and have only polished out a few cars, but I already know vastly more than I knew this time last year. Watch Mike's videos and give it a try. You'll do great.
I've been working on family member's neglected cars until I muster up the courage to work on my ride. Learned a lot so far and family members are happy they're getting their rides polished and sealed for free!