If it was a full days training.... I could see why people would have problems with it. We only started training on it just before the fire season a few years ago, but is well worth the effort.
Fair enough it takes up a training night where you might want to be doing something else and there is potential to be stuck in a dual cab truck with 6 other big, sweaty, somewhat smelly people!
But in the end its a bit of fun and well work reaffirming the methods in your mind. Besides, how many people do you hear saying I learnt hose drill in level 1 say dont need to do that anymore (I know thered be someone out there!), not very often I wouldnt think.