Divide numbers in the following groups:
Group A=> 1,3,5,7,9 (Low,Red,Odd)
Group B=> 2,4,6,8,10 (Low,Black,Even)
Group C=> 11,13,15,17 (Low,Black,Odd)
Group D=> 12,14,16,18 (Low,Red,Even)
Group E=> 19,21,23,25,27 (High,Red,Odd)
Group F=> 20,22,24,26,28 (High,Black,Even)
Group G=> 29,31,33,35 (High,Black,Odd)
Group H=> 30,32,34,36 (High,Red,Even)
Track each group separately, count the amount of appearances for each group.
Bet straight up the numbers of the group with more hits, 1 unit on each number.
If for example the group you are betting is: 19,21,23,25,27 bet simultaneously on Low,Black,Even with 9 units on each EC.
When there is a change in the leadership of the groups then you change your bets accordingly.
The point is to bet a small group of hot numbers and on the same time 3 relatively cold EC's, whatever wins you are in profit.
If 1 of 4 numbers hits you are winning 5 units
If 1 of 5 numbers hits you are winning 4 units
If 3 of 3 EC's win while you are betting 4 numbers you are winning 23 units
If 3 of 3 EC's win while you are betting 5 numbers you are winning 22 units
If 2 of 3 EC's win while you are betting 4 numbers you are winning 5 units
If 2 of 3 EC's win while you are betting 5 numbers you are winning 4 units
When you win only 1 EC you are losing 13 units when betting 4 numbers and 14 units when betting 5 numbers
I don't know if you think it's better to include 0 in your bet selection but if you don't bet it costs 31 to 32 units every time it hits.