Hope I can explain it easy, bear with me, english is not my native language I use this sometimes, when its possible at online live roulette in a casino that shows the last 500 spins at a marquee I would call this a method, not a system, you can use it sometimes, and some others you wont find the moment to start betting. the basics are based on the empiric experience shown by millions of RNG and real spins combined first the records 7th hit : 140 spins 8th : 165 9th : 200 11th : 220 12th : 250 13th: 290 14th : 320 15th: 360 16th: 400 you may find some bigger record , but this is pretty accurate how I bet first I check the last 110 spins, if there is no number that hit 7 times, then the session is good to play. second I find what numbers hit 6 times , and I will only pick up to 3 numbers (no more) and those who were the first ones to reach 6 hits. If there are only 1 or 2, I may later add a third one (and no more) whenever a number hits for the 7th time there are two possible outcomes I win, or I loose (this means a number I didnt pick was the winner, and will be the next number I will bet alone till I may add 2 more with 7 hits) during that game I dont use any progression. but if I lose, I will now go for the 8th hit, and so far , I will have 1 number (will add 2 more if needed, no more) this time with 2 chips on each number. Usually when we are close to one record, the next hit comes fast. for 7th to 10th hit, I will start 20-30 spins before for 11th to 16th I will start 25-35 spins before I have more rules to play this, as well as a little system to start at the same time with the first number that hit 2 times after I start betting. let me know if you are interested and I explain more.