Some time ago I tested rule 3 for Laying purposes. I even looked at faves that were unplaced at last two starts and also at their last three starts - unfortunately all three methods were unsuccessful.

The same with rule 6 - it was unsuccessful.

Rule 7 began promising, but eventually went backwards.

However, I have never tested any of the other rules except for rule 4 but only with faves resuming from a spell, again that eventually failed.