How to use imbalance

[ozon]

Recently I thought over the use of imbalance in the first 40 spins.Let say 11black and 26 red, we always use the EC imbalance of 15 to start betting, and try with long mild proggresion but always fail. I began to think of the use of short progresion, which ends a spin up to 60. What kind of progression you use make 1 unit profit. I think about something like this 11111222224444488888

[donik7777]

More safety 1111111...1,5 1,5 1,5 1,5 1,5  1,5 1,5 1,5 22222222222222222222222222222

[ozon]

Donik this kind of progression is too light