I was recently playing and an awful player sat down at my heads-up table. He made some really smart plays like doubling for less ($5 double on a $25 bet) 9 v 7 and he pulled a 2. After he lost, he asked me if that was a good play and I made the mistake of telling him doubling for less is always a bad idea, cuz you're limiting yourself to one card. After the count went neg, I wonged out and started another fresh shoe at another table, heads up. Guess who comes, too. The casino was unusually empty for the number of tables open, so I did a lot of jumping around. My "partner" followed along each time. Of course his bad play didn't bother me, but he was as slow as hell, and that did bother me. Ever experience anything like this? How do you dissuade someone like this from joining your table? This place only had MSE tables.