<<There are considerations & techniques that can be used that are outside the manufacturer's manual but try explaining to the insurers & the CAA if you stuff it up & damage the a/c...>>
If you stuff it up, then it is a case of whatever you were actually doing you say "I was flying by the book, M'lud." You're hardly likely to say "Yes, I rotated 10 knots too early / late."
Of course, if the aircraft was overweight / out of CG that won't wash!
QDM