UB,
First of all, excellent effort mate. very good of you to share.
Just a suggestion, can you use odds from one of the totes to add to your database?
That way if you find a system to be profitable on the database you can be confident of getting better results or equal by using betfair/top fluc etc.
If you can find a system to show a profit on UNITAB etc your laughing!!

Thanks to Chrome, I have a few..