I have migrated to the two bucket method, but use the auto geek (Mike Phillips) method of washing and protecting my paint finish. When I bought my FiST I told the dealer not to wash the car, but they had already washed it, so there was a lot of swirl marks. I'm sure since the car set for several months in San Diego, bad car washes were the norm. When I got the car home, I used a two bucket wash, but also used a pressure washer with a foam cannon. I use Adams car wash, diluted 5 parts soap to 8 parts water, and pour this into the foam cannon bottle. I spray the wheels with Sonax full effect wheel cleaner, let that soak in while I'm getting the buckets set up and the pressure washer connected. I use wheel woolies to clean off the OZ wheels. These are powder coated blue, so I take special care with them to remove the brake dust weekly. I rinse off the wheels, and then apply the soap with the foam cannon. This puts a lot of very thick soap foam on the car. I have a microfiber mitt that I wash the car with. Then I use the power washer to get all of the soap off of the car. Next I use a Master blaster to remove all of the water from all surfaces. I always wash my car befor any direct sun comes out, usually at 6:00 AM. Then I pull the car into the garage, and spray and wipe with several microfiber towels and Sonax Detail spray.
When I detail the car, after drying, I spray the car down with car pro Iron-X to remove iron particles, then I scrub the surface using a nanoskin autoscrub mitt to remove paint contaminants. I check the paint before and after the decontamination with a plastic baggie run over the surface. Any snags or roughness, and theres still contaminants on the paint. I mask off the plastic bits and prepare the car for power buffing and polishing. I used Wolkgang swirl remover and then finishing glaze. For a final step I use both a polymeric sealer (Klasse) and pinnacle wax, both applied by machine. I detail the car once a year. I'm going to do it a little early this month as I noticed some tiny swirl marks on the roof.