A nother couple are just the place strike rate if you are in the shorter end try 45% or greater and number of starts for the horse or all horses in the race as in must all horses must have had 3 starts min so less chance of a suprises.

Another lot is to break them up into ages 2 , 3 ,and 4,5,6 and maybe 7 year olds, and older into another lot cut of should be over 10 years ???