$400 6-max: Low pocket pair in position, vs LAG

[einbert]

The villian in this hand is about 42/20 over 40 hands or so, most of those 4 handed. He is a loose player and aggressive after the flop. He is not afraid to fire pot sized bluffs out and also value bets pretty strongly. His handreading skills are visible but somewhat lacking.

Comments on all streets appreciated, but I think the turn and river are most interesting. I'm also interested in input as to the size of the flop bet, or even whether it should be made (although at the moment I'm pretty convinced it should be made, I can certainly be persuaded otherwise).

UTG ($663.40)
Hero ($400)

Preflop: Hero is Button with 6[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/heart.gif[/img]. SB posts a blind of $2.
<font color="#CC3333">UTG raises to $21</font>, Hero calls $21, <font color="#666666">2 folds</font>.

Flop: ($48) 4[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, <font color="#CC3333">Hero bets $30</font>, UTG calls $30.

Turn: ($108) 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, Hero checks.

River: ($108) J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG bets $100</font>, Hero calls $100.

Final Pot: $308