I tend to add people which wasting my time into blacklist, so if i am doing farm only no bonus and somebody joins, then we enter and there is bonus, we find the dude easily. Then I leave and put him into blacklist. Many players do same way. And its working, also rumours spread, so bad players will not join your party when they saw your name plus if your farm party is good your name will became rocognized by farmers/same minded people. I farmed all gear from BCOB,SCOB,FCOB after lock eased and before echo, after a while in farming business I was able to recognize good and bad players only by name .