If there were any doubts that winning clusters are common in Pick 3 lottery - here some from recent New York draws: 7 wins in 7 draws.
8 growing trend digits selected from 20 draws.

The same lottery, the same time frame, this time cold digits winning 5 doubles in 5 draws.
8 cold digits selected from 15 draws.

Winning clusters appear constantly in different selections. These clusters represent trends among groups of digits and some of these trends may last for several draws. This is how you pick the winners - keep a constant watch for clusters.