The authors of that book used drowning/"rescuing" as a technique to "train" their monitors, and killed one or more monitors in the process. The authors have since been banned from every forum out there, due to extreme harassment of other members, and have at least two to three dozen aliases.
The culmination of this saga is here:
http://www.captivebredreptileforums....-gabb13-5.html
You can basically feel free to read that book and do the complete opposite of everything that's said.