Six Deck to Double Deck

For the most part I've taylored my game to beat 6 decks. I use a hi/lo count with indexes. Don't have them all down yet. But my game is still in the process of becoming strong. I know ofcourse that fewer decks are easier to beat given the right rules and penetration.

With that I've spotted a DD game with 65% penetration and 10 min. The rules: H17, DA2, DAS, OBO, and late surrender. Thus, I've decided to put effort into beating a DD game. I guess my question is what should I start learning first?

I know the pattern of counting is different for DD face down. Goes like this (correct me if I'm wrong): Dealers up card, your two cards, consecutive hit cards by player and yourself and busts as you see them, dealers hit cards, and hole cards of every other player.
I have not yet practiced with that pattern.

Furthermore, what is the best way to compute the TC. Divide by halves? So if the count is +4 early you divide by 4 to get TC of +1.

Any suggestions are greatly appreciated.

"Furthermore, what is the best way to compute the TC. Divide by halves? So if the count is +4 early you divide by 4 to get TC of +1."

It all depends if you are using half-deck true count of full-deck true count. In your example, you get the TC on a half-deck and it means you should cut in half most of the published indexes for the Hi-Lo count. I prefer the full deck, usual Hi-Lo true count. This would mean a TC of 2 in your example (2 decks remaining).

I much prefer double deck games to 6 deck games. When you feel more comfortable playing it, you should also try to see the cards that the guy next to you is holding. I like to play the second to last position so that I can see the 3rd basemans hand as well as the guy to my right.

I divide by 2 to get the true count until half a deck has been dealt. After the half deck is dealt I divide by 1.5, so a running count of 6 becomes a true count of 4. After a full deck has been dealt, the running count becomes the true count. IMO, you do not have to be exact, but when doing the calculation I tend to err on the safe side. As in if you're not sure how many cards have been dealt out, a running count of 6 can be converted to a true count of 3.

Yes, I would have to cut my index numbers in half and also readjust my betting schduel since every true count increase of 1 adds about 1% as oppose to the usual .5%.

What index numbers do you use for double deck? Are the single deck #'s in Stanford Wong's professional blackjack good for double deck?

If your only reference is Pro BJ, you have to decide between SD indexes or 4 decks indexes. To play a DD game I would prefer the use of the 4 decks indexes. SD game is too much of a different animal.