You can't polish a whole bonnet in one go
I knew this, when I done my car I just judged each section rather than taping it up though as I thought this was a better method than finishing one part removing tape and then starting on the new bit with a heavier cut than the part you just finished etc. I understand that's not how you done it but surely some of these 50/50 have had a finish polish used and then the move onto the part right next to it with a cutting polish again which imo is a ballache due to changing pads all the time and also could effect the part they had just finished.