Barny, for once I agree with you.

When designing my systems I try to get the maximum profit from the minimum number of selections. Let me clarify - if I run a system and get 200 selections for a profit of 50 units, I will always try to reduce the number of bets and get the same or similar profit. This is simply weeding out the crap and my current portfolio consists of 10 systems that average 30-40 selections a month. My best system over the past 8 months has give me 43 selections with a 76% S/R and 99% POT.

That being said I also have 2 automated trading systems running on Betfair that bet on every race that only have 1-2% POT - but the turnover is alot more than my other systems.

I would say that each method has merit but if you have systems with a small number of bets due to the amount of filters, make sure the filters are logical or else it will likely fail.

Cheers,

Mat.