Preface: This was the result of many tests on frequent hitting sectors from BetPhoenix Live American, Dublinbet Euro 1 & 2 and Dublinbet Palace Euro 1 & 2 Wheels. It worked on those, but there's no guarantee it will work again or elsewhere.
Procedure: On the newest two consecutive black numbers, bet #11, #17, #18, #19 & #20 for up to six spins, flat-betting.
Bankroll Suggestion: 300 units per one unit base bet, 600 units per two unit base bet...
Win-Target/Stop-Loss: +20%/-30% of the original bankroll amount.
Play for a virtual win before betting with money.