I use that same site to provide the odds on my points based ratings as well. I've only recently started using my spreadsheet again since putting it together last spring carnival. I've given it a bit of a facelift and adjusted some of the scoring recently which seems to have improved the ratings.

I've also added to mine an indicator that shows when a horse is a 'SPECIAL' bet due to certain system criteria being met and it being in my top 5 ratings. I started backtesting this last night on previous races i'd completed ratings on and so far there were 20 'SPECIAL' bets placed for 8 winners and 6 place getters. I didn't have time to work out the POT or winnings but seems like the odds varied from $1.80 through to $7 on the winners.

I'll start to post my ratings again in an old thread i created for interest's sake. Although Shaun are you able to help me get cells from excel to paste into the forum better?

Note my spreadsheet is not automated, but is a pretty simple copy/paste of form from ozeform and takes me about 1-2 mins per race.