peter m,

2 - 7% POT is certainly achievable. There wouldn't be too many big players around who have better figures than that. If they do, they aren't turning over very much.

In regards to form factors, you can certainly rule out any nonsense such as "using the first letter of the day to find in a horses name as a selection". Unfortunately there is a lot of those ridiculous systems posted on here. And to be honest I would discount everything that any person who posts that stuff says. It will get you no where.