Wouldn't go near it! Particularly as he advocates and sells his version of a prong collar - an adversive way to prevent a dog from pulling - and not very successful at that.
Try using methods that have actually been proven - scientifically and not by marketing spiel!
Great website for finding info is www.dogstardaily.com loads of free stuff to read and watch too.
Basically there are no short cuts, good training and manners take time, but if you learn to enjoy the process rather than focus on the results you enjoy and treasure you spend with your B learning together and then the finished behaviour/trick/exercise is just the icing on the cake.
