I grew up essentially dry plucking. Mom would tell me she wanted a chicken to cook so by the time I caught one and had it's head off she'd have a fairly small sauce pan with hot water ready to pour over it. That helped some. Since it was all I knew it didn't seem that bad. Of course I had younger fingers then. I agree, dunking until the wing feathers easily come out is easier.
I don't pluck anymore, I skin them. My wife prefers them skinless and with my set-up heating water is a pain and a fire hazard. It's just easier for me to skin them as I butcher. It slows me down so I don't do that many at a time but I also cut them into serving pieces as I butcher. Some people really like it with the skin on.
If you raise Cornish X you will butcher them so young the skin comes off easily. The older a dual purpose cockerel gets the harder that becomes. I usually butcher my dual purpose cockerels at around 5 months, they aren't that bad but you can tell a difference. You really don't want to skin an old rooster. Old hens aren't that bad about skinning plus if you try to pluck them when they are molting those pin feathers can be an issue. We each need to find our own way.
I agree, if you are going to pluck scalding makes it easier. And do not overcook the skin. If you do it tears really easily so the carcass is not as pretty. Some people really like a nice skin. Think about your logistics of heating water and maintaining temperature. When I plucked before switching to skinning I used a large clamp-on-the-side candy thermometer to check water temperature.