I do the form on Friday and narrow the field down to 3 or 4 chances. Then I calulate each horse's chance. Then I see what the tote price is on race to see if I have an advantage or not.

Example.

Phar Lap I think the horse horse has a 80% chance of winning.

The tote is offering $4.50 which is a 23% chance of winning. Therefore i Would bet on that horse.