Join Date: Dec 2005
Posts: 1,083
When I'm planning on leaving, regardless of previous pots won, I do nothing until after my last hand (always UTG). Once I fold, I start packing myself up (put iPod in carrying pouch, look around for/grab a rack), etc. If my UTG hand ends before I'm ready to stand up, I tell the dealer to deal me out before he starts pitching cards.
Seriously, there is no etiquette at B&M for this. Get up and leave whenever you want, even if you stack 4 people in the previous hand. You don't owe the table any courtesy or any warning that they need to start getting their "9 handed" ranges ready or have any obligation to stay if you just won a big pot.