Sitting out bad shoes
Thanks for the responses. I'll clarify a couple of things. I don't ask the dealer for permission to take a break or a phone call. I just do it away from the table. Respect for the rules draws less attention I would think. Also, I don't play the two deck shoes - so in the case of being greedy, I'm not even in that game. In my area of the country, I rarely see or notice other card counters at the table. Most people are relatively clueless even when it comes to basic strategy, much less being a counter.
Someone is usually at the table when I decide to leave for a break. Also, I don't do it every time a deck turns negative. If there are only one or two other players at the table, I'll stay. Most of the time the tables are full, so finding another table at these casinos may take a half hour so I rarely switch if things are going well. I've had evenings when the shoe was positive 90% of the time because of how I was executing this technique. That has to be worth something. Also, you can't do it too often. So, there will be times that you should stay and play through the bad shoe and hope for the best. I've had situations where I decided to sit out, and then the next shoe was even worse. I don't want to draw any attention by going to the well too often. So I do practice a little discretion. In addition, when the wife is finished playing slots and its time to go, she always lets me play a couple more shoes before departing. If the shoe turns negative, I get up and leave and night is over. Thanks again everyone. I'll stay tuned for any other thoughts you may have.