AhQc on a monotone club board against unknown

[EricW]

Villain is unknown.

Repop preflop?

Do I raise here on the flop or should I check call hoping to keep the pot small and give him every chance to bluff?

Please help on thought process

Full Tilt Poker
No Limit Holdem Ring game
Blinds: $0.25/$0.50
6 players
Converter (http://www.neildewhurst.com/hand-converter)

Stack sizes:
UTG: $114.20
UTG+1: $35.60
CO: $45.65
Button: $99.20
SB: $82.35
Hero: $52.05

Pre-flop: (6 players) Hero is BB with Q/images/graemlins/club.gif A/images/graemlins/heart.gif
UTG folds, <font color="#cc0000">UTG+1 raises to $1.75</font>, CO folds, Button calls, SB folds, Hero calls.

Flop: 7/images/graemlins/club.gif 6/images/graemlins/club.gif A/images/graemlins/club.gif ($5.5, 3 players)
Hero checks, UTG+1 checks, <font color="#cc0000">Button bets $3</font>, Hero calls, UTG+1 folds.

Turn: T/images/graemlins/spade.gif ($11.5, 2 players)
Hero checks, <font color="#cc0000">Button bets $6</font>, Hero calls.

River: 8/images/graemlins/heart.gif ($23.5, 2 players)
Hero checks, Button checks.

Results:
Final pot: $23.5

[carnivalhobo]

id raise the flop for value, preflop is fine.