Blind Defense: Bluffing on flops with an Ace?

[sammy_g]

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all blind defense is dependent upon the opponent. you just can't make any sort of generalization here and hope that it will work successfully.

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Of course this is true. But I generally check/fold against almost all opponents here except the maniacs. Is this a mistake? What opponents would you try a bluff against?

I did give a read in my original post.

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Say a reasonably aggressive button open raises [...] Button generally plays well and is capable of laying down a hand.

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It might be a bit vague, but often at the table you don't have much more to go on.

Against an unknown, do you check/fold and not worry about it?