you can manipulate this game
one way to "milk" this situation is to triple your bet every time the deck goes negative. Lo and behold, the negative deck will get shuffled away! then pull back your bet and bet off the top with your standard starting bet. if the deck goes solidly positive, then double your bet. if it stays positive, inch the bet higher. You would have to check out the dealer to see what would make him/her shuffle up as you inched your bet up. Like, if you bet $50 off-the-top, and the deck went positive eon the next hand, and you doubled your bet to $100, and the deck still stayed positive, if you moved your bet up to $150, would that cause the dealer to shuffle, because your $150 bet is triple the $50 bet? this would have to be discerned. Regardless, a situation where you are getting the negative decks shuffled away, and you are getting a 1-2 or better spread on the positive decks, is not too shabby