If its a broiler and I'm only doing one, I might not want to start heating up water and pulling out the plucker. My preferred method is dry plucking. I find its much cleaner and to tell the truth, I don't care for the smell of scalded chickens.
Its the kind of thing that you just aren't really good at until you have done it over and over, so I think it takes additude, determination and a certain amount of hard-headediness.
DH began telling me to order a plucker, when he saw that I was being consistant with slaughtering my unwanted roos and broilers, but for a long time I couldn't justify the $350 it would cost. I have since bought a plucker though. If you are going to slaughter several at one time, its nice to have a bird plucked in a minute....maybe just a few seconds more at times, but not much. In those cases.....yes, I do scald.
But I used to just hang my birds from an A frame, in the yard, with some twine, slice the throat, wait for them to bleed out and pluck or skin, cut off one of the feet, evisorate, remove head, clean organ meats and cut remaining foot. All I needed was twine, something to hang it from and a pairing knife.