The "Doubles, Doubles" system(this can be found on the web) says that when a double hits, the following numbers will drop: 012,013,014,015,016,017,018,019,023
024,025,026,027,028,029,034,035,036
037,038,039,045,046,047,048,049,056
057,058,059,067,068,069,078,079,089
123,124,125,126,127,128,129,134,135
136,137,138,139,145,146,147,148,149
156,157,158,159,167,168,169,178,179
189

With 2 years of stats in Georgia, Ive come up with rules on how to use it.
1. Play the below numbers after a double hits.
2. Don’t play the same day as the hit.
3. Play for the next 2 calender days, 4 draws, then quit.
4. When a gap appears, just wait till the next double hits, then resume play.
5. Don’t play triples.

The stats for 2010 are: 195 yearly doubles, 161 hits, 34 misses, 114 hits the next day and 47 hits the 2nd day.