Thoughts on river plays when board is huge? NLTRN

[PokerAmateur4]

i.e.

PokerStars No-Limit Hold'em Tourney, Big Blind is t30 (2 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Hero (t1295)
Button (t1705)

Preflop: Hero is BB with 8[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/club.gif[/img].
<font color="#CC3333">Button raises to t60</font>, Hero calls t30.

Flop: (t120) A[img]/images/graemlins/heart.gif[/img], 4[img]/images/graemlins/club.gif[/img], 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, Button checks.

Turn: (t120) 3[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets t80</font>, Button calls t80.

River: (t280) 2[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets t180</font>, Hero calls t180.