Record the outcomes of 10 H/L results. Then break it down, recording in one column 1-9 as Low/Low and 10-18 as High/Low. In another column record 19-27 as Low/High and 28-36 as High/High.
Decide if H or L is the next bet. If you pick H, then decide if L/H or H/H will win.
Lets say you pick H/H. Place one unit on double street 1/4, 7/10, 13/16. Place 1 unit on single streets 19,22,25. Place 2 units on single streets 28,31,34.
If H/H wins, you win 12 units. If its a low number, you lose 6 units. If its a L/H number, you break even. Essentially, you're risking 6 units to win 12 units. You're betting 12 units, but can only lose 6 (unless its a zero) so the risk is 6 units.
This is a very forgiving way to play, especially with a progression and a little luck. If you have any kind of betting strategy for the EC's, give it a try. You can lose twice as many as you win and almost break even.
Its a betting method. You have to use your own system to determine where the bet goes. Maybe there were 3 high's in a row, so you think the next spin will be a low number. So you look at the low number column and maybe there are 3 Low Low's in a row and you want to bet Low High. So you do. If you're right you win 12 units, if its Low Low you break even.