Need opinions on trailer cleaning

Hey guys I have a 28" BLACK trailer with flat panels and it is by far the hardest thing I have tried to perfect. It is 1 yr old now and I have done a light 3 step last year with Wolfgang swirl removal and a quick glaze followed up with the Blackfire WOWA and I have had issues with the swirl removal haze after a few days. I tried to re-do the same process this weekend and looks good in the daylight but after a day and with the florescent lights from the garage I can again see the haze in the paint from the swirl removal. I did the process in complete shade and buffed till my arms hurt and still the same issue. Since this thing is soo big I need something that is a quick 1 step cleaner/wax, hell even a filler way would be fine as I clean it often and love to use the Blackfire WOWA on everything. These sheetmetal panels I do not think have a clear on them and that might be the issue and they get a very light oxidation after sitting in the sun for a few months. I feel I am very knowledgeable on the auto stuff and very happy with my results on personal cars etc but this trailer is wearing me out and time to ask for some advice.