Scalding a hog?

Ok I started this thread later than I should have. I have never tried it until this weekend. This is my experience. The hog was slaughtered 15 minutes before it was scalded. I had a burner set up with a large crawfish pot and water sat at 160 degrees. I tried wrapping sections with a towel and scalding. I let the towel sit a minute and pulled it off and started scraping. After the hog was hung up the hair came off relatively easy after 5 minutes. Within 30 minutes the hair had set. after repeating the steps a few times i gave up. So i resorted to skinning the hog. I know I did a few things wrong but hey you live and learn. I will master it one day