HU OOP on a coordinated board

[btspider]

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BT: If the turn is a blank (say 2 [img]/images/graemlins/diamond.gif[/img]), are you donkbetting or Check-raising? I'm inclined to C/R HU, despite the freecard possibility, curious what others would do....

Jon

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i like the idea and i know i don't do it enough against the more aggressive players out there. what other boards/action would you do this on HU?