6max and checkraising

I have a general question with regards to check-raising in short-handed games. How often are you guys doing it? Coming from off of ring games before moving to 6max, I usually limited my check-raises to all but the most choice situations (i.e. flop a huge hand with pf aggressor on my left ... EP check-raise when button raises & like to continuation bet etc).

Would there be more value in C/R more marginal hands - like top-pair ok kicker or even flush draws (with odds of course) into relatively small fields (3 .. maybe 4 people), not necessarily for pot manipulation purposes, but more for image? Or is the turnover at these 6max tables too high that no one will notice or care.

I just feel that, 90% of the time, an EP check from me is a definite "I have a marginal hand and will fold to aggression 50% of the time" and is inducing auto-bets from a lot of players ...

THis is against normal opponents of course ... maniacs and super trocks don't really fit in.