Poor penetration,crowded table or walk?

[8675309]

Casinos are full of all different kinds of +EV opportunities. Learn other stuff so these trips aren't wasted.

I've ran across one hole card flasher in my years but to be honest I don't watch for them nearly enough.
I need to change that for sure. But as far as other AP opportunities other than promotions, hole carding and counting then I don't know.