This bluff of mine wasn't exactly the most fancy or anything, but force works sometimes too. Is there a nice way to pull off an effective flop to river bluff?

***** Hand History for Game 1382766310 *****
NL Hold'em Trny:8361526 Level:5 Blinds (50/100) - Sunday, January 02, 22:53:08 EDT 2005
Table 1st Step 2-Table(197625) Table #1 (Real Money)
Seat 1 is the button
Total number of players : 6
Seat 2: rphetman ( $2135 )
Seat 3: thekid64 ( $1265 )
Seat 4: karrri ( $1445 )
Seat 5: casper27278 ( $1735 )
Seat 6: Squeak2k2 ( $1955 )
Seat 1: jazz71man ( $1925 )
Trny:8361526 Level:5
Blinds (50/100)
** Dealing down cards **
Dealt to Squeak2k2 [ 7s 2h ]
karrri folds.
casper27278 folds.
Squeak2k2 raises [200].
jazz71man calls [200].
rphetman calls [150].
thekid64 folds.
** Dealing Flop ** [ 9c, 3d, 4h ]
rphetman checks.
Squeak2k2 bets [175].
jazz71man folds.
rphetman calls [175].
** Dealing Turn ** [ 8h ]
rphetman checks.
Squeak2k2 bets [400].
rphetman calls [400].
** Dealing River ** [ Jc ]
rphetman checks.
Squeak2k2 bets [500].
rphetman folds.
Squeak2k2 does not show cards.
Squeak2k2 wins 2350 chips