Counter Trap?

How would you determine a "counter trap". I've heard and read about the term a few times.
If a casino has multiple 6 deck games and one 2 deck game, is this most likely a trap?
What are signs of a possible trap. What are counter measure ideas from some experienced players? Would you even bother? Or just play the 6 deck?
Can you just play 1 or 2 sessions and win and leave without arising suspicion?
Can they tell from 1 shoe or would it take 5 or 6?
I suppose any and all information on traps and camo from knowledgeable/experienced players? With longevity as the main goal.

The single best way to avoid suspicion is to leave shortly after your big bet goes out. I can spot a fellow counter within a few hands of positive count. You don't get longevity if anyone knowledgeable is watching you: you have to hit-and-run, returning during different shifts to get any kind of longevity.

Thanks for the advice, will definitely use that, didn't think of it. Would it be better or the same to hit the 6 deck game for longevity? What constitutes my big bet? 5x,6x, higher?
Is it safe to assume more cover under the 6 deck shoes, or is that a false sense of safety?
If I was to attack a game, would I be better off at the 2 deck or 6 deck, all things considered?
If I'm going to nail and bail, better off at the 2 deck seems logical. If both games have equal surveillance.
I want to blend in and be able to play for a long time, not just a few giant wins then banned. Or is that my destiny?
If so, I would play with way more money... But that might attract more attention...
Any advice on the sweet spot is appreciated. And pros cons 2 deck vs 6 deck for someone if they counted.