grave and day usually have less experienced people both on the floor and in surveillance. Swing has the sharper people but you have more action in the casino to blend in with. There is a luck element with whether you get the attention of the pit or surveillance. Whether they see you as a threat or not depends on many things as well as your act and how much time you've spent putting everyone at ease.
Personally I prefer some other action in the pit/casino. Anytime you are the only big action your odds of being caught go way up. But I don't want so much action that I can't move around or find close to heads up conditions. I like to play when the casino is doing the drops all around (money carts emptying slot machines and drop boxes).
Very well put... Couldn't have said it better myself. I like the way that you put it. I also like to play when the money drops occur. It toke me a while to latch on to the fact that the casino personal's attention has to be averted during these times. It most likely would have allowed me to play longer in some city's had I been doing this all along. I also like to play when there are disputes on the floor. If you pay attention there are quite a few everyday in each casino. I will bid my time playing chatting it up at the bar with some chips in front of my so I get my drinks free and when a drunk decides to act a fool I will walk over to the table closest to him and play big until the situation is close to being resolved.
One other thing to think about is self-evaluation. What I mean by that...do you function well in the middle of the night? All of us have good and bad times when we peak and others where we perform at less than 100%. If you're one of those that aren't focused at 3:00-4:00 a.m. and your body is ragged, perhaps you may want to restrict your play to those hours where you are at the top of your game. Some people can change their body clock easily, some don't.