Good question. This is one of the difficult things about system betting. If you use systems, often they come up with selections that you don't honestly think can win or in races where you think another horse has superior form. As a result, I always mix systems AND form analysis. A good example was Caulfield R7 yesterday. The new system I'm trialling picked Trick Or Treating, but in my own mind, Hollow Bullet was basically a good thing. So I backed them both, having more on Hollow Bullet because of the shorter price. Then again, I am used to backing more than 1 horse per race. I do that 90% of the time. For people that like to back just 1 horse per race, I'm not sure what they do.