If I knew which hose was going to win the race I would back it myself, and not share the information so that the odds were reduced.
But If I did not know which hose was going to win then the way to make myself some money would be to tell people I did know the winner and then charge them for the winner's name. But I don't do that.
I don't know if you've ever had any experience of these so called tipsters? I have and I'd strongly advise against getting involved with any of them, no matter how persuasive they appear to be.
Pick your own losers then you'll have no one to blame but yourself.