NL50 Am I too weak tight?

[JROK777]

Assume 100BB stacks.

Hand 1
Full Tilt Poker
No Limit Holdem Ring game
Blinds: $0.25/$0.50
6 players
Converter

Pre-flop: (6 players) Hero is UTG with Q[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/heart.gif[/img]
<font color="#cc0000">Hero raises to $1.75</font>, UTG+1 calls, CO calls, 2 folds, BB calls.

Flop: Q[img]/images/graemlins/spade.gif[/img] 8[img]/images/graemlins/club.gif[/img] 3[img]/images/graemlins/diamond.gif[/img] ($7.25, 4 players)
<font color="#cc0000">BB bets $7.25</font>, Hero calls, 2 folds.

Turn: 2[img]/images/graemlins/club.gif[/img] ($21.75, 2 players)
BB checks, Hero checks.

River: 3[img]/images/graemlins/heart.gif[/img] ($21.75, 2 players)
<font color="#cc0000">BB bets $21.75</font>, Hero folds.
Uncalled bets: $21.75 returned to BB.

Results:
Final pot: $21.75

Villian is 29/19/3 If I bet the turn I will have crossed the "comittment threshold." The PSB river be looks like a miss turn cr to me. I would have called a smaller bet. Do you play this hand the same?

Hand 2
No Limit Holdem Ring game
Blinds: $0.25/$0.50
6 players
Converter

Pre-flop: (6 players) Hero is Button with Q[img]/images/graemlins/diamond.gif[/img] Q[img]/images/graemlins/heart.gif[/img]
2 folds, <font color="#cc0000">CO raises to $1.75</font>, <font color="#cc0000">Hero raises to $6</font>, 2 folds, CO calls.

Flop: 5[img]/images/graemlins/heart.gif[/img] 9[img]/images/graemlins/spade.gif[/img] 7[img]/images/graemlins/heart.gif[/img] ($12.75, 2 players)
<font color="#cc0000">CO bets $7</font>, Hero calls.

Turn: A[img]/images/graemlins/club.gif[/img] ($26.75, 2 players)
<font color="#cc0000">CO bets $13</font>, Hero folds.
Uncalled bets: $13 returned to CO.

Results:
Final pot: $26.75

Should hero raise the flop all in or play as I did? If we raise, we have crosssed the "commitment threshold." I think I played too weak here and should have committed to this hand on the flop. What do you think?