I play quite a lot of SnG's also (but not as many as I'd like) and have noticed a trend - allow me to explain....
if I'm on good form and I play tightly but aggressive I'll finish in the money 3 or 4 times out of 5...this boosts my confidence some what and i feel unstoppable....so, i play more cards and see more flops knowing that i can win - more often than not though i'll get sucked out by some fish and lose more chips than i'd like - thus you dont finish in the money and your confidence drops...as your confidence drops you either end up chasing cards and pots and lose more or your go back to playing a tight aggressive game and play like you did when you was winning....you then start playing your normal game, win pots, grow confidence back, play more cards, lose pots, lose confidence and so on and so on....
i try and play my normal game when on winning streaks but its hard...confidence and adrenalin soon control your emotions and that raise button starts to stand out more....
