A system I tried for a while but then found it hard to get the form guides for all of the meetings. It is very simple:

1. Qualifiers are taken for an all-up place bet.
2. Selection is any dog with 4 or more starts and is the only dog in the race with a 70% or better strike rate.

That's it.
It went ok for the short time I did it but I'm not really a dogs man or a big punter so I got sick of going to the greyhound and pet supply place to buy the form guides for the sake of a $10 all up bet. A lot of the time there was no qualifier at a meeting as well.

Looking at the divs on dog races I've tried backing all those paying $10 or more for the win with about 15 seconds to go. Usually there were 3 or 4 per race meaning a target return of about $40 per meeting. Look at the dividends on any given night and see how many $10+ dogs there are. The trouble is the huge fluctuations even with 15 seconds to go. I think it's got a bit of promise but only for the $1 punter and you have to ask yourself,'Is it healthy for me to be cooped up in a room by myself listening to the Gulargambone (etc) dogs for hours every evening?'