Selected all Supertab races this year.

Bets 12890
Winners 4083
Placing 8233

Level win return. $-1720.00
Level Place return. $-1374.50
Win to $100, return $-55688.21
Cost to $100 $314755.50
Place to $100 $-96141.73
Cost to $100 $584799.65

As can be seen, if it is a loser, the bet to return a certain amount can be a real killer.
However early in the piece there was a winning period, albeit very short, where the level stakes returned a POT of ~11%
and the proportional a POT of ~18%.
So if you are winning it can quickly multiply your return, but in the losing periods you also go down really, really, dangerously quickly.
Whether it's worth the pain, I don't know.
Obviously betting on favs. is not a good indication because they inherently lose.
What I need to do now is try on my winning selections and see if I can
live with an occasional losing run.

Basically it was a waste of time as we already knew what would happen.
There is a comma delimited text file for those who want to double check the results, it can easily be imported into Excel or a database, it's too big to post it here but I'm happy to Email it, to anyone if interested.

Good luck.