If you always raise to 30c with AKs, AKo, AQs, AQo etc. and always raise to 50c with AA, KK, QQ and JJ. It's not going to take a player that is paying attention to your action preflop to easily gauge what hands you're playing.

So I have AQs and you raise to 50c, It's an easy fold for me in a spot where you want me to call.

Also, I have KK and you raise to 30c and it's folded to me. I know I'm only dodging an ace at the worst. A good time for me to slow play you a little and hope you pair your kicker.

Or I have KK and you raise 50c and the flop comes Q high. I'll be able to make a crying fold if you come out swinging becuase I know you wouldn't bet JJ strong but would bet QQ and AA strong.

But if you keep your raises steady. I can't infer this kind of valuable information as easily.

As for when to use deception, not until you notice your opponents playing tighter and weaker becuase the betting amounts are more subsantial. Maybe around 50 buyin.

-'rilla