I dont read any poster here as indicating that one should deliberately overspeed the rotor. My interpretation is that extraordinary measures to keep the rotor in the green (on the high end) shouild be avoided if these otherwise compromise a safe outcome. There is a lot going on in a for real auto and rotor speed is usually not the highest priority (except to have enough). If you are good enough to do eveything just right, then do so. At the end of an auto, I am certainly not looking at the rotor tach. I'll take whatever speed my ears say is OK.