Hi Garrett = I track Doubles myself. I just use the same method tracking them as I do other games. I have a separate Database that contains only Doubles that have played.
One method is tracking by Sum Totals of the 2 digits that play. By determining whether the Sum Total will be Even or Odd I know which direction to look. Two Even 1 Odd will always Sum ODD and 2 ODD/1 Even digit will always Sum Even. All Even will sum Even and all Odd will Sum Odd.
One thing I've not looked at is the repeat rate for Doubles from game to game. For all games it generally runs about 60-62%. I have a separate Doubles Database for both Midday and Evening SC games although I dont live and play there. I track for an online friend and give him a "heads up" whenever I see something about to happen.
From my records it appears the next SC Midday Doubles game will Sum Total Odd and higher then 14. The last four Doubles games for Midday have been ODD games. Also appears from my charts that the next Doubles game will come from digits of the last four doubles games to play Midday. If that is the case it would eliminate digits 4-2-0-7-1.
Tonight an EVEN game of 060 played. The last 2 night doubles have been EVEN games. Appears the next game will probably be another PURE....meaning all EVEN or all ODD digits. My charts are indicating both digits could come 5+ games out (based strictly on past Double games) and that would be digits 9 and 3.