100NL: 77 rivers gin, but do we like it?

[SirFelixCat]

Villain is a total monkey. 80/17/1.8. AF by street is: F-1.57, T-1.44, R-4.67. Now he does know to keep the somewhat small when he bricks, but again, he's a monkey. He does try to get value out of his hands that he runs into though.

Now with that in mind, what's the best line on the river: call, raise, or fold?

(obv we're not folding, but just for the sake of completeness....)

Full Tilt Poker - No Limit Hold'em Cash Game - $0.50/$1 Blinds - 6 Players - (LegoPoker Hand History Converter)

SB: $113.25
BB: $186.80
UTG: $117.40
MP: $188.45
CO: $112.95
Hero (BTN): $172.80

Preflop: Hero is dealt 7[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/diamond.gif[/img] (6 Players)
3 folds, <font color="red">Hero raises to $3.50</font>, SB folds, BB calls $2.50

Flop: ($7.50) 5[img]/images/graemlins/club.gif[/img] J[img]/images/graemlins/diamond.gif[/img] 8[img]/images/graemlins/diamond.gif[/img] (2 Players)
BB checks, <font color="red">Hero bets $6.00</font>, BB calls $6.00

Turn: ($19.50) Q[img]/images/graemlins/club.gif[/img] (2 Players)
BB checks, Hero checks

River: ($19.50) 7[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">BB bets $19.50</font>, Hero contemplates and ???