(NL25) Fire second barrel when my draw improves?

[Wolfram]

Villain is 57.5/7.5/2.71 @ 41 hands. Is this a good spot for a second barrel? Seems to me that this type of loose/weak opponent will often call a flop bet with any piece of it (bottom pair anyone) and then fold to a bigger (money wise, not pot fraction wise) turn bet. I also have a lot of outs if he calls.

PokerStars No-Limit Hold'em, $0.25 BB (6 handed) Hand History Converter Tool (http://poker-tools.flopturnriver.com/Hand-Converter.php) from FlopTurnRiver.com (http://www.flopturnriver.com) (Format: 2+2 Forums)

CO ($17.30)
Button ($25)
SB ($20.50)
BB ($10.20)
UTG ($6.85)
Hero ($39.05)

Preflop: Hero is MP with 7/images/graemlins/diamond.gif, A/images/graemlins/diamond.gif.
<font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $1</font>, <font color="#666666">3 folds</font>, BB calls $0.75.

Flop: ($2.10) T/images/graemlins/heart.gif, 8/images/graemlins/diamond.gif, 4/images/graemlins/diamond.gif <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets $1.5</font>, BB calls $1.50.

Turn: ($5.10) 9/images/graemlins/club.gif <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets $3

[nyc999]

Based on your read and the hand itself, you played this fine.

[pokerchap]

make it 4-5 on the turn. this is definitley a spot to fire a 2nd barrell. we are drawing to a straight and the nut flush.