I always try to wait a while and watch the Tamas dance (to look out for when he is jumping for joy).
He 'dances' a particular sequence over and over - so if you watch him you will quickly see the repeats of the sequence and get a "feel" for when he is going to jump for joy.
It doesn't always work - some characters are harder to win than others - my fave is Zuchitchi - because he has a huge grin and it's easy to spot! Nyorotchi is quite easy for me too. I am useless at winning slots when I have a Hiratchi... but I think it is probably different for different people!
Best, etc.
TamaMum