Maybe the manufcaturers should stop calling it take-off power and call it contingency or some similar term. I know it will still mean the same thing but it will stop pilots arguing whether it can be used for landing or hovering.
It is very unhelpful to say it is a five minute rating and then not specify the frequency it may be used or more importantly the frequency of use the manufacturer has assumed.
It certainly gives the manufacturer a legal get out when the engine fails and the investigation shows that the 5 minute power was being used almost continuously - they then say 'we only expected it to be used 2 1/2 times an hour - we just didn't tell anyone that"
I like Nicks bean analogy but if the number of beans is known at the start and the rate of bean usage the manufacturers have calculated to make the zero bean count happen at the expected engine change hours - then operators can at least give guidance to their pilots and you won't have one guy using 50 beans and the next 500 beans to do the same job.