Filtering the front pairs:
WI
026 8 {2,8} {2,1} {2,3} {8,2} {8,1} {8,3} {1,2} {1,8} {1,3} {3,2} {3,8} {3,1
Locate front digits of subsequent draws, and delete those pairs, eg next draw was 135 with lead 1, hence pair {1,2} {1,8} {1,3} is deleted. Your remnant front pair are {2,8} {2,1} {2,3} {8,2} {8,1} {8,3} {3,2} {3,8} . The next draw 892 has a lead of 8, hence pairs {8,2} {8,1} {8,3} is deleted , your current remnant front pair are {2,8} {2,1} {2,3} {3,2} {3,8} {3,1).
Now lets focus on {2,8} {2,1} {2,3} {3,2} {3,8} {3,1) and see the front digits trends> you had draw 365(x),387(trapped),remnant {2,8} {2,1} {2,3} for draw 214.
NB> since the target is str bet, a time frame of 10 draws is still below the prize tag $500, the above filtering method is just one of many ways of reducing the front for playable picks. With front pair/s located, waging doubles becomes less of a strategy.
135 9 {8,1} {8,3} {8,4} {1,8} {1,3} {1,4} {3,8} {3,1} {3,4} {4,8} {4,1} {4,3}
Now compare the front of sum 8 and current 9, and some of your fronts to focus becomes clear, but lets filter the lead digits :
Current draw 135 has lead 1> {1,8} {1,3} {1,4} deleted
Draw 472 has lead 4> 4,8} {4,1} {4,3} deleted
Remnant Front Pairs>{8,1} {8,3} {8,4}{3,8} {3,1} {3,4}
NB: I want you to observe the projection of the LEAD DIGITS FOR THE FRONT PAIRS(This a effective filter).
The next draw was 892 with the lead 8> {8,1} {8,3} {8,4} deleted
Current Front>{3,8} {3,1} {3,4}> for hit 387.
Good Luck.