worst semi bluff attempt ever?

[faughtandone]

so i had been playing fairly tight and hadn't made any moves or been caught out of line so i felt like the timing was right. i also felt like there was no way someone could call w/just top pair...plus i had a lot of outs if called.

Party Poker No-Limit Hold'em, $2 BB (10 handed)

Hero ($96)
UTG ($97)
UTG+1 ($96.45)
UTG+2 ($268.38)
MP1 ($93)
MP2 ($152.20)
MP3 ($46.81)
CO ($300.24)
Button ($46.85)
SB ($546.16)

Preflop: Hero is BB with 7[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/club.gif[/img].
UTG folds, UTG+1 folds, UTG+2 folds, MP1 folds, MP2 folds, MP3 calls $2, CO calls $2, Button calls $2, SB completes, Hero checks.

Flop: ($10) 8[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/diamond.gif[/img] <font color="blue">(5 players) </font>
SB checks, Hero checks, MP3 checks, CO bets $20, Button folds, SB folds, Hero raises to $65, MP3 folds, CO calls $45.

Turn: ($140) 5[img]/images/graemlins/heart.gif[/img] <font color="blue">(2 players) </font>
Hero bets $29 (All-In), CO calls $29.

River: ($198) Q[img]/images/graemlins/club.gif[/img] <font color="blue">(2 players, 1 all-in) </font>

Final Pot: $198

Results in white below: <font color="white">
Hero shows 7s 6c (two pair, queens and fives).
CO shows Qd 6d (full house, queens full of fives).
Outcome: CO wins $198. </font>

in retrospect i think it would have been better to raise to 50 then push so he would have to call a bigger bet on the turn as well as making my flop raise less suspicous.
any thoughts?