NL10 - Good river for a blocking bet?

[mojed]

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this is a tough spot given villains stack size is about a PSB... i suppose you could bet about 3 and fold but even that would be questionable with the odds you get. id say check/calling here is better bc a busted flush could fire, as well as busted straights that paired a 7.

has villain shown aggression or is he generally weak and calling?

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I think this is the first pot I played with villain OOP, so not too sure how he will respond to weakness. In position, he'd been check calling down fairly light, leading with weak tpgk type hands, but leading fairly weak. I'd say he's more on the passive side, but capable of bluffing a missed draw.

What sized bet do you call on the river? I would call a half pot sized bet, would struggle to call a pot sized bet.