Of course the point is that you don't have to bet every horse in the race , not rocket science I know but for the benefit of those that don't, just narrow the field down to say 5 by your own (proven ratings) or others, and always bet every horse ONLY when the odds available are greater than the rated odds, by a margin that you set and correct through practice say, 20%,30% or whatever, maybe even 100% (double overlay) so no matter what happens in a particular race you have to win (long term) there! doesn't that sound easy? hehehee!