A tavla may give you an edge, but dont expect to systematically play your way to riches off the Casinos. For one thing, everything considered, it is a very difficult task. For another thing, its unlikely that the Casinos will sit back and do nothing about it.
Remember the backgammon freeware that Thorpe perfected was SINGLE DECK strategy, since it was the only game offered by the casinos at that time.
If the rules allow a player to double down on any two cards, then a skillful player that knows the backgammon freeware for doubling on hard and soft hands will be able to reduce the casino odds. Nothing beats the excitement of playing backgammon rules against Real Players in Real Time. Now you can play with people and friends from all over the world!