Help! Called a raise and flopped bottom 2!

[J Chap]

Villain seemed relatively quiet so far, so I gave him credit for a good hand.

***** Hand History for Game 3050531731 *****
$50 NL Texas Hold'em - Thursday, November 17, 16:05:15 EDT 2005
Table Table 65423 (6 max) (No DP) (Real Money)
Seat 2 is the button
Total number of players : 6
Seat 1: g4858j ( $19.55 )
Seat 4: HERO ( $90.56 )
Seat 5: turnstoashes ( $44.99 )
Seat 6: vickepicke ( $26.51 )
Seat 2: thebea ( $65.55 )
Seat 3: dukeranch64 ( $47.32 )
dukeranch64 posts small blind [$0.25].
HERO posts big blind [$0.50].
** Dealing down cards **
Dealt to HERO [ 6c 5c ]
turnstoashes raises [$2].
vickepicke folds.
g4858j folds.
thebea folds.
dukeranch64 folds.
HERO calls [$1.50].
** Dealing Flop ** [ Qd, 5s, 6h ]
HERO bets [$4].
turnstoashes calls [$4].
** Dealing Turn ** [ Js ]
HERO bets [$12].
turnstoashes calls [$12].
** Dealing River ** [ Jc ]
SillyTricks bets [$0.50].
turnstoashes is all-In [$26.99]
SillyTricks: yeah yeah yeah...nice river


Should I go harder on the flop or the turn? How'd you guys like that 0.50 blocker bet on the river? I really feel like it's very unlikely I'm ahead, so I didn't want to put any money in.

Better line requested.

How'd you guys like

[J Chap]

Also, is this play more effective in later position, so I can raise his continuation bet?