I did the dish soap in the water. Actually it was probably more like 145 degrees. I did 150 before and seemed like I did slightly burn a thin layer of skin.
Scrape the skin with a knife...hmm that might have worked. I was thinking that there has got to be a trick to it cuz whew that was a pain. lol
Next time I will check their feathers to see if there are an abundance of new growth feathers and wait for them to grow in a bit if so.
But this time I just had too many cockerels trying to beat each other up...had to do a round one cull.
I use 145-147 degree water when I am processing very young and small birds, 147-148 when they are a bit older; 150 for the older ones, definitely 150 for year old or older birds, especially roosters, and they get swished in the water longer. I use a needle-nosed pliers to squeeze or pull out pin feathers. It can be tedious if there are a lot of them. The automatic plucker does a pretty good job of getting pin feathers out, but if there are a lot of them, I always have to pull a few myself.