Analysing trends is a great way to find good priced winners in big races.
I say big races because to get a trend there has to be some history and the big races are where you get that consistent history from quality runners who are all out to win.
Basically when you use trends you create a profile of what the winner of a particular race will look like.
There is a basic example of this on the Racing Post website for this weekends Paddy Power Gold Cup at Cheltenham. This particular example only looks at 4 factors, for me this is not enough of a profile to make a confident bet.
For a more detailed ready made profile for all the top races this NH season I'll be using Nick Pullen's Winning Race Profiles