This is betting 4-8 cold numbers, with splits.
I'll try to describe a single trigger: Wait for a Line (the same line) to hit twice within a dozen (not necessary in sequence). Now, wait for the other line to hit within that same dozen. When the other line hits, the the two unhit splits within that line is bet.
As a second trigger appear while the first is bet, the second trigger is also bet,(and +1u bet)
Now 4 splits are bet with 2u each; use a negative 4 split progression until hit
2 2 2 2 4 4 6 8 10 12 16 20 26 34 44 56 72 92 118
i've never gone beyond step 9 (10u) from my first test....
As you get one hit, those two splits are removed and the other two are kept. (reset to 1u) and wait for a second trigger (if the first trigger is also hit, wait for a new trigger)
first test was played with 5u bets. (ignore the first 80 spins)....
Test 2, played with 1u bets
The graph has a nice climb to it.....just need to smooth out
that big draw down at the start.