I trying this Lay the Field system which won me about $200 yesterday. I will show only one race here and the amounts to lay each horse on S.P as it would take too long to list more races.

Seymour Race 7
1 - $111
3 - 74
4 - 70
6 - 48
7 - 63
8 -130
10 - 68
11 - 41
12 - 102
13 - 116
14 - 45