Yes, I agree with you Jonathan. This has always been a problem and it is unlikely to go away.
Running QRP on SSB into a pile up of between 10 and 20 stations it is sometimes difficult to be heard - with some chasers seemingly relying on ESP to make a contact with the activator. With a multi-op activation like the one I have just returned from this creates a further problem. Despite giving my callsign repeatedly I lost count of the many people who were calling me Dave, who was EA6/G3TQQ/P and who was sharing the radio. Chasers are relying on spots rather too much and either not hearing or not listening closely enough to the voice at other end of the link. My callsign was EA6/G4OBK/P and name Phil, so check your logs against what we put in please.
This should not have been much of a problem on CW, however with the closely lettered callsigns of Nick EA6/G4OOE/P and Phil EA6/G4OBK/P once our logs are in it will still be worth checking that you have the all important asterisk in your logs or your contact would be invalid. ON most summits we took seperate bands, however on two or three summits we were around 300m distance apart and we were able to operate on 20m CW both at the same time, which shortened the time we needed to spend on the summit before moving on to the next one. This is truly one of the joys of QRP SOTA! (Off topic I know but worth mentioning).