Flopped Boat - Could Have Been Played Better?

[primate]

After this hand I was frustrated not to have got opponents stack. He was very loose passive.

PokerStars No-Limit Hold'em, $0.50 BB (9 handed) converter

MP2 ($64.40)
Hero ($70.75)
CO ($49)
Button ($8.65)
SB ($9.50)
BB ($111.65)
UTG ($18.50)
UTG+1 ($56.35)
MP1 ($62.50)

Preflop: Hero is MP3 with 9[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls $0.50, MP1 calls $0.50, MP2 calls $0.50, Hero calls $0.50, <font color="#666666">3 folds</font>, BB checks.

Flop: ($2.75) T[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(5 players)</font>
BB checks, UTG+1 checks, MP1 checks, MP2 checks, <font color="#CC3333">Hero bets $0.75</font>, <font color="#CC3333">BB raises to $2</font>, UTG+1 folds, MP1 folds, MP2 folds, Hero calls $1.25.

Turn: ($6.75) K[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets $2</font>, <font color="#CC3333">Hero raises to $5.5</font>, BB calls $3.50.

River: ($17.75) 5[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets $18</font>, BB calls $18.

Final Pot: $53.75

Results in white below: <font color="#FFFFFF">
BB has Jh Th (three of a kind, tens).
Hero has 9s 9d (full house, nines full of tens).
Outcome: Hero wins $53.75. </font>