gargoil, While placing that wager will pay you on the number you are looking to cover, the number is expected to show on only 1 of 36 placements, and not show on the other 97.2% of the come out rolls. So placing boxcars to "cover" the "problem" of not having it pay at come out will actually make the math much worse than playing just the Don't. There is NO way to "improve" the math of the game. It is player negative by design, and the casinos know this. Only the variance introduced by (1) odds and (2) random and unpredictable (player favorable) dice outcomes give us a "mathematically definable" opportunity for a win, even a big win.