Lucky

No, I don't look for 'drifts', I eliminate a runner if it's opening price (official) is the same or longer than the price in the paper.
eg SR4
2-Restless PP 7.00
5-Jameela PP 9.50
6-Saturday Fever PP 26
10-Ya Ya Effendi PP 35

2 opened 6.00, 5 opened 4.40, 6 opened 11.00, & 10 opened 16.00, every other runner opened the same or longer than their PP, so were weeded out.

Oh who cares, I'll put up another post outlining exactly what I do.