Identifying chip leaks in my game?

[Karak567]

Party Poker No-Limit Hold'em Tourney, Big Blind is t15 (10 handed) converter

BB (t725)
UTG (t575)
UTG+1 (t920)
UTG+2 (t530)
MP1 (t895)
MP2 (t770)
Hero (t760)
CO (t1055)
Button (t985)
SB (t785)

Preflop: Hero is MP3 with 7[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/spade.gif[/img].
UTG calls t15, <font color="#666666">3 folds</font>, MP2 calls t15, Hero calls t15, CO calls t15, <font color="#666666">1 fold</font>, SB completes, BB checks.

Flop: (t87.50) 5[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(6 players)</font>
SB checks, BB checks, UTG checks, MP2 checks, Hero checks, CO checks.

Turn: (t87.50) 3[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(6 players)</font>
SB checks, BB checks, UTG checks, MP2 checks, <font color="#CC3333">Hero bets t45</font>, <font color="#CC3333">CO raises to t90</font>, SB folds, BB folds, UTG folds, MP2 folds, Hero calls t45.

River: (t267.50) J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets t100</font>, Hero calls t100.

Final Pot: t467.50

[J-Lo]

too early in the tourney to be risking chips, what do ou beat here? a complete bluff? Maybe a 3 or 5? I think u get shown a better hand 80% of the time. I fold to min raise-- usually in a field this big, i dont even bet. Maybe with 1 or at most 2 oponents the bet is okay, otherwise checkfold w/o a 7.

[Newt_Buggs]

I would have bet the flop, but I think that this is a leak in my game since there's just so many players