A tip from "doc"
 

Attachment 34926

Beyond that, the line you use should be a "+" or "(+)" race.

Lines like these.....

Attachment 34927
Attachment 34928


tell you nothing.

I take that back.
You can learn that the horse was not able to run early against the pace of the race that day.

You can learn that the horse was not able to run late against the pace of the race that day.

In other words, you can learn that the horse had no impact on the outcome of the race whatsoever. Is THAT the kind of line you should be looking for?

Bill V posted the "original" screen from a race where the lines selected for each horse that was selected appears. Here it is.

Attachment 34929

As you can see at a glance, it is easy to determine which horses might/will go for the lead and which horses will come off the pace.
In this case, the use of the MAIDEN win for horse #1 is questionable since today's race is for NW3L. "DOC" would have ok'd the use of this line if the race had been for NW2L. Beyond that, it is easy to see which horse will be going to the front early.

What would you learn if you were looking at lines like the ones I posted above?