I am often called by QRP guys. Some are very excellent operators while the other are "impossible" operators. Imagine I am making despairing effort to copy what the QRP guy is telling to me. It is a real strain to my ears as well as to my brain. With excellent operators, I am honored to make a QSO. What should I say for those impossible ones? From my experience, I have made a draft of QRP Code of Conduct.
QRP Code of Conduct;
Send message in as simple and short manner as possible.
Imagine how your signal reaches the other side. You should grasp the cindition and the difference of set ups between yours and the others. Imagine and concentrate on what the other expects you to send.
Omit /QRP in your identification. /QRP is only your self satisfaction.