I challenge, nay defy, anyone to maintain visual contact at low level on a rainy night with 2400m vis when they are on the outside of the circuit turns. Given the experience of some guys in RHS who will trust their judgement that "it's OK to turn now, boss."
Been there, done that, in big a/c and it works. Sometimes numbers are a very useful tool. The same is true with power settings. If you set it too low to start with it ain't going to work, so why do it? OK, there are those who say if you need more then give it; same with less only reduce it. But I still advocate that it makes life simpler, less work load and puts me in charge and ahead of the a/c, if I set a sensible power setting first and then fine tune it. If I guess in the dark and have to chase after the a/c IMHO that's not the way. But that is a whole other philosophy than the circling matter. It's just an answer about 'the numbers' idea.