A question I have for those who bet ratings for overlays, is how many do you back in a race? If for example oyu rate a race, and there are 5 horses which are overlays, would oyu back them all? Or would you only focus on the top 2 or 3 in your ratings?

In theory I guess if you have efficeint ratings that are more accurate than teh market, oyu would bet them all, but I would assume that it would be next to impossible to have ratings which are that accurate?