This is a discussion on Throwing off your opp HUD stats of you. within the online poker forums, in the Tournament Poker section; I found this is a pretty neat way to skew you stats.
If you are going to go all in:
Preflop all in minus 1/10th
Pretty neat, I actually use similar thing. When going all in, like you, I also leave tiny little bit behind. What happens is when they 3bet and I call, my fold to 3bet becomes lower than it should be. It has really profound effect in SNG games where you play a lot of push folds with same opponents. Never thought about checking down postflop though. Will implement it, thanks for the idea.