Nick,
perhaps I should have been a bit more elaborate in my previous post. I meant to say that applying a set margin over hover tq (as in 10% in the A+) is our equivalent to downrated thrust in an airliner. But it's also infinately more comfortable when the A/C is light.
But I do believe that the flight manual specifies T/O power for Cat A and the graph shows that that is quite often (in our met. conditions anyway) at or close to 100%
So is it safer to fly Hover tq + x% or pull the lot?
And indeed, how do you train a pilot to fly the profile, like Steve76 asks?
Personally, I like 10% margin and swift rotation, but is there a better way?