Not sure if this has been thought of before, a simple system that seems to be working well 'so far'
Using the even chances H/L and recording them in 3 wide matrix, wait for either LHL or HLH and bet on the next line the opposite will not form. The progression I'm using is up 1 on a loss and down 1 on a win.
The thing I like about this system is it can take a while for a LHL or HLH to form,so the chances of the complete opposite happening straight after one does form seem slim/not often.... but I could be wrong.
LLH
HLH
LHH LLW 0
HHH
HHH
LLH
LHH
LLH
LHH
LHL W +2
LHH
HHH
HHL
HLL
HH0
LHH
LLH
LHH
LHL
LHL W+3
LLH W+4
HLL
LLL
LLH
LL0
LHL
HHH LW+5
HLL
LLH
HHH
HLH
LL LW+6
Ivape
I think it's in the progression Ivape. Playing for an opposite with HLH or HHL happens rather often with ECs. To see if a method I am thinking about has potential I will almost always run it through 10,000 Random.org spins visually. This can go really fast depending on a methods parameters. Recognizing patterns goes very fast.
If you don't know how to use Random.org for spins let me know.