check/call check/call check/raise the river

[cardcounter0]

You know the scenario. You flop TPTK.
Table full of fish check around, you bet, they call.
Nothing on the turn.
Table full of fish check around, you bet, they call.
Nothing on the river.
Table full of fish check around, you bet ---
Fish all fold, except one of the check/call fish RAISES.

Do you make the crying call? How often do you give the fish an extra bet?

I have found more often than not, that river check raise means:
His stupid little pocket pair became trips on the river.
That river card gave him two pair of whatever random crap he is playing.
The gut shot straight just hit.
Runner-Runner flush just occured.

It almost never means:
Maybe his bottom pair, 9 kicker is goot.

It also means you are playing against a slightly smarter fish, pulling the river check raise, because usually the check/caller chaser all of a sudden bets out -- the donk bet, I believe, when they do hit. Like they are afraid all of a sudden you aren't going to bet your hand like you have been doing on every other street, and might check it down, and they just HAVE to get that bet in.

How often do you pay off the suck out fish?