With the reverse Labouchère system you must determine in advance how much you want to put at stake. Let's say you're willing to risk 10 euro. Then you divide this amount over a number series, e.g.:
1 1 1 1 1 1 1 1 1 1
1 2 4 2 1
As an example, let's continue with: 1 2 4 2 1
Next you will place a bet with a factor/odds equal to two and with the stake being the sum of the two outermost numbers: 1+1=2
If you lose the bet, you drop the two outermost numbers and get: 2 4 2
If you win the bet, you add the stake to the row on the right side and get: 1 2 4 2 1 2
You then play on in the same way, with the two outermost numbers as your stake. If you lose now you drop the two outermost numbers; if you win, you add the stake to the right side.
In the end you will either lose your 10 dollars or make a profit. If you win, you will have to choose the right moment to stop playing.
Pros and cons:
One advantage is that you know how much you're going to risk in advance. There are no escalating series of stakes that will bring your bankroll down to zero. One disadvantage is that you will have to make peace with smaller winnings. You won't however lose everything in one go.