I'll probably get suspended for this , or probably banned , but you asked the question , and I am answering it.

Why would you suspect it to be Profitable?
What data do YOU have?

LAST START WINNER - Wouldn't a Form Factor like that attract Most Punters?
Last Start TRACK WINNER - Again , would certainly attract Most Punters.
PRE POST FAVOURITE - Surely that would attract the Most Uninformed Money.

So it appears to me you will be finding animals that are extremely Overbet and also that are Overbet by the Mug Punters.
Which is the complete opposite of what you should be trying to achieve.