Profitable Strategy in Slots?

Here’s what I was thinking about, guyz. Let’s say that random numbers generators are absolutely fair and really give out random numbers, without depending on the amount of the bet, so to play optimally you should:

1. Spin at small bet.
2. After a long break make a large bet and spin several times.

If the machine gives winbacks in fucking coins, we start playing with small bets, after time it will give us some coins back, and the return at this time is going to be large.

What do you think, that’s interesting idea or fucking bullshit? For example, you may spin Space Wars at small bets and catch long strikes, and then switch to big bet right away. Or it’s all nonsense? Write me in comments your opinion.