I've got TEN systems that contribute to an overall POT of 63%

What I've noticed with developing these systems is;

My Base filter in each system may have a wide range or a narrow range. For example; One of my systems has race prizemoney as a second filter and from $9,999 to $69,999 it rises with each $10,000 increment, perfectly, peaks at $69,999 then falls with eac $10,000 increment. So, it means that we could have a range of say $19,999 to $99,999 and hit more selections. Or we could narrow the range down to be closer to the "optimum" of $69,999 but have fewer bets with a higher POT.

Some filters have a very narrow range, and it get's me realising that there is a very fine line between winning and losing.

There are some filters within some of my systems that are literally the difference between a decent POT and a LOT. It's almost unbelievable, but these filters identify, for instance, on-pacers, so yes they're significant.

The database has taught me that LOGIC and a NEXUS between the Base Filter and all other filters is essentia.

The best filter is price, and the best overall strategy is to get the best price.