C-bet percentage question

[wpr101]

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I lawerned new secret trick against random pepole. You can bet extremely small amount and they fold a lot. I keep doing it with monsters, raising PF...pot has 900 in it, I bet 200 into 2 opponents and they both instafold. Happened to me over and over, so I figure you may as well do it 100% of the time in spots like this against random opponents. I mean at absolute worst bet 200 and see what happens, there is almost no chance that they don't fold enough to make it a +EV bet.

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I don't mind this every once in awhile but I don't want to have my continuation bets floated too much also. The cash game forums seem to reccommend always betting 3/4-1 of the pot. Curtains, do you know why the strategies are so divergent for cash games and sngs? I'm not too sure myself but I sort of think I understand it.