Q8s to a raise

[car ramrod]

If your aggro is low, raising pf is not the only way to make it higher. Look what you did post flop. You check/called, check/called, and checked. That is what keeps your aggro low. The best way to get it up is to bet and raise.

You have to bet this river, most villians are not value betting like they are supposed to, plus that river was a pretty scary card for him.