You are right Crash, re. profit.

I hope I'm not offending anyone here but I know a few people who make a living off the punt, including me, and none of them feel the need to do anything but level betting.

If you have to grasp for straws, something is wrong with your method, (or could be greed?) either way, it's the wrong solution.

Sorry, no offence meant, just an observation, if the shoe doesn't fit etc.
(Jeez one has to put in so many disclaimers these days)