Find users who have hit a page >n times

I've always found the Dynamic Invite Auto Send options to be way insufficient for our actual trends.  I want to to detect if someone continually revisits a given page within a session, for example -- and there's no way to do this.  I can detect when they hit it once,  or once after session is n seconds old, but not when they have hit it 5 times in a session, which is exactly the kind of thing that represents curiosity/confusion and when I want to Auto Send.