I have been using Race Prophet for the last few years.Its totally free.I don,t use it to find the winner but use the data that you can organize to suit your game.
Ex.Speed figs (best of last 3 races) pace lines etc etc..
Suggest you fool arround with it a bit.I have isolated some factors that used
in combination will get you the winner out of 3-4 contenders 80% of the time.
Make a value line using the top 4 horses as 80% of your line and the
remaining horses 20%.eg (Barry Medows ,Steve Ferro) You won,t get rich
using this method but as a weekend warrior you shud break even.