The biggest problem I have with past results is that it can affect your judgement... should I persevere with the same type of bet even though it is close to wiping out my bank, should I increase the bank and stake in the hope that I will hit a long overdue winning streak, should I stop when I get back to zero, should I stop laying in the winter???
The following chart is an example of one of my systems that had been a good earner previous to this year. I will continue to update them when I get the relevant data from the BfSp history site.
1 point stake / 100 point bank / Lay limit 4.00
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If only I had started after Cheltenham.
11 Jun 15
19 May 15
19 May 15
16 May 15
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Cutting Out The Middleman
Though my approach is ratings and filters combined with methodology, I believe this year's weather made my May and June less profitable. I adjusted for July and August but September, I felt the whole time like I was driving 'my car' on the verge of going off the road.
The factor is sometimes obvious. An example; a friend of mine built an algorithm for determining total runs in a baseball game. It did okay. What made it a winner? When he found a site that gave wind direction/speed and barometers for every ball park live.
I also think you should stick with it. It didn't kill your 100 pts. A system is sometimes like a business where you have to look at the entire year rather than each month.
That said, I hope you have a fantastic Christmas!