It depends on several factors.
If the shoe is close to its end, then I will stay for the start of the next shoe, but miss a hand or two.
If the shoe has a ways to go but is negative quite a bit the chances of it going up enough to get a heavy bet out there is less, and not worth playing a bunch of neg EV hands just for that slight chance. So leave, take a break, or go to another pit.
You also have to take into consideration how often you have been wonging in this same casino and the heat or lack of there. You can get away with a ton of wonging in a big place with many different pits In a one or two pit place the critters will notice at some point.
The dealers cards can often give you an excuse to look like a ploppy and wong out. She gets a blackjack or hits 16 and pulls a five, then you in your frustrated ploppy act can sit out a hand or two. I do this at times, and the pit and the other players believe it is to change the mythical flow. Generally done near the end of the shoe.