[wazz]

Don't worry. It certainly isn't a big leak to check behind the underfull here. We've all been burned with the underfull before. The thing about this hand is that he just keeps on checking and calling, which indicates he doesn't like his hand enough to bet, therefore he isn't full. He might be full sometimes, if he at all has a history of being tricky, in which case you should be checking behind a decent amount, but readless/with the knowledge that villain is a semithinking player we can get in a valuebet here. Not too much to fold out AQ or QJ, probably about half the pot. This is a spot where we can use our position very nicely.