If you're doing this, would you pass on doubling 11 against a 9 or 10?@ nash
If you truly enjoy BJ I have a simple system that works on a 3/2 BJ table. Forget about the + & - count system because it's very highly overrated. All you need to do is count the Aces. Aces not only help you in scoring BJ but are also very helpful in doubling down your 9's against a dealers 4 or 5 or 6 but also doubling your 10's as well. You don't need to count ten value cards because it could take you 2 or 3 shoes to get a + count advantage. 10 value cards are going to generally stay within a + or - 3 count. Not enough to worry about.
So here's what you do. Count only Aces and keep an eye on the discard pile on the dealers right. Play two hands so you're getting a 2-1 advantage over the house at scoring a BJ. You know how thick a 52 card deck is so if you see 1 discard deck with only one Ace gone you immediately have an Ace count advantage in your favor. Increase your two hands wagers by a slight amount. Not enough to draw attention. Let's say another deck goes by and you've only counted 3 Aces in the two deck discard pile. There's supposed to be 8 Aces out so you are now at a +5 Ace count. This is substantially in your favor. Press the bets on your two hands even more.
This is my proven system, and it WORKS!!! An easy way of keeping your Ace count is to pile red chips up by your chip stacks. Players fidget with their chips all the time and the house has zero idea what you are doing. DO NOT get greedy. Hit'em and run after a couple shoes for a quick $500 profit and you will never get caught.