You also ought to decide on your money management goals. If you are looking for big money in winnings, then you ought to play in high odds machines, perhaps, a machine that provides with 9:12. Also, you ought to choose between the progressive jackpots and multiple coin machines. When you need more money you ought to take more risks.
Since slots are completely games of chance, you can optimize your bankroll only with progressive betting and other kinds of betting patterns in use in games of chance. You cannot optimize your slots, but you can manage to bet more or less after a win or loss based on what your monetary aspirations with the game are. In reality, a slot machine strategy is lot like “I have done this before and I won and so I will try it again.” Also, there is an “enough is enough” kind of approach that you should use to optimize your winnings. Stop, when you have reached a certain win or loss level.