I personally concentrate all my efforts on Melbourne racing.
There are enough races going around to forget about maidens anywhere.
The problem we have in lining up the form is that there is a diference in class between a restricted class race on a Monday, Saturday, Friday,etc., and a restricted class race on a Wednesday.
All form guides identify these races as a C1, 2, 3, etc.regardless of which track or day they are run on.
Maybe if Handicappers or whoever is responsible for categorising races had punters interests at heart,a $4000-00 C1 at Wangaratta on a Saturday would have a different classification to a $7000-00 C1 at Bendigo on a Wednesday.
I find it particularly frustrating to have to refer to dates to get a handle on which day the race was run in order to get an idea of the quality of the race.
As far as specialising on one area goes, it also follows that it might be a good idea to specialise on types of races.
I find that distance races are difficult to predict because of the effect of differences in pace.
Generally speaking, it might be a good idea to concentrate on races from between 1100m. and 1600m.
Eliminate maidens and the weaker restricted class handicaps.