This system analyzes the draw per position.
The first thing I did was to create a spreadsheet with the days of the month in the first row.
Then I put the numbers 0-9 in the first column three times (with a row separating each 0-9 group).
Then I went through the past draws and put an X in each cell for that day. So if the draw was 369, I put an X in the first group at 3, an X in the second group at 6 and the final X in the third group at 9.
This allows me to see the pattern for each number in each group.
In analyzing the numbers, I disovered that if the number in a column is 0-3 then the next draw in that column will be a higher number 70% to 80%+ of the time.
If the number in a column is 6-9 then the next draw in that column will be a lower number 70% to 80%+ of the time.
If the number is a 4 or 5 then it appears that it can go either way.
I then do some positional wheeling using those rules. I filter out triples and I filter out the last draw sum and root sum.
Normally this leaves a couple of hundred numbers but the next draw straight will be there 70% to 80% of the time.
If the first column of the draw is a 4 or 5 then you should probably not play that day.
If the second or third column is a 4 or 5 then it might be a good idea to wheel all the digits in those positions since you don't know if the number will be higher or lower. However, you could end up with 500+ numbers which is not profitable.
Another filter that can be used is to look for sums that are due or root sums that are due.
I am still working on refining this straight system.