Another view A/P late pick four:
Race 6;
A picks 4 8
B picks 3 9
Race 7;
A pick 11
B picks 3 5
Race 8:
A picks 2 11
B pick 8
Race 9:
A picks 3 9
B pick 7
So you have an:
A/A/A/A 4,8/11/2,11/3,9 = 8 * 3 = $24
A/A/A/B 4,8/11/2,11/7 = 4 * 2 = $8
A/A/B/A 4,8/11/8/3,9 = 4 * 2 = $8
A/B/A/A 4,8/3,5/2,11/3,9 = 16 * 2 = $32
B/A/A/A 3,9/11/2,11/3,9 = 8 * 2 = $16
A/A/B/B 4,8/11/8/7 = 2 * 1 = $2
A/B/A/B 4,8/3,5/2,11/7 = 8 * 1 = $8
B/A/A/B 3,9/11/2,11/7 = 4 * 1 = $4
A/B/B/A 4,8/3,5/8/3,9 = 8 * 1 = $8
B/A/B/A 3,9/11/8/3,9 = 4 * 1 = $4
B/B/A/A 3,9/3,5/2,11/3,9 = 16 * 1 = $16
for a total of 82 combos out of 9,317 or about .75% of the toal for an investment, after weighting, of $130 or you play a caveman ticket of 4/3/3/3 for $1 each (108 combos = $108).
Good luck, I hope it helps. Unusually full fields today provide some betting opportunities.