Typical Bluffing situation: How many of you bluff here...

[Haplo]

Opponent is 14/0/1 in 83 hands

Full Tilt Poker
No Limit Holdem Ring game
Blinds: $0.25/$0.50
9 players
Converter

Pre-flop: (9 players) Hero is Button with T[img]/images/graemlins/diamond.gif[/img] Q[img]/images/graemlins/spade.gif[/img]
6 folds, <font color="#cc0000">Hero raises to $1.75</font>, SB calls, BB folds.

Flop: 3[img]/images/graemlins/diamond.gif[/img] 2[img]/images/graemlins/spade.gif[/img] A[img]/images/graemlins/club.gif[/img] ($4, 2 players)
SB checks, <font color="#cc0000">Hero bets $2</font>, SB calls.

Turn: 4[img]/images/graemlins/spade.gif[/img] ($8, 2 players)
SB checks, Hero checks.

River: 4[img]/images/graemlins/club.gif[/img] ($8, 2 players)
SB checks, <font color="#cc0000">Hero bets $4</font>, SB calls.

Results:
Final pot: $16

How many of you bluff here in this situation? You only have to be right 33% to break even betting 1/2 the pot. Does anyone bet more as a bluff (say the pot or 3.4 of the pot)?
Thanks.