100NL Good spot for a blocking bet?

[Roger Mainfield]

Villian is 52/14/2 over about 100 hands.

Party Poker No-Limit Hold'em, $1 BB (5 handed) Party Poker Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

UTG ($43.50)
Hero ($115.36)
Button ($129.89)
SB ($101)
BB ($107.40)

Preflop: Hero is MP with 6[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $4</font>, Button calls $4, SB calls $3.50, <font color="#666666">1 fold</font>.

Flop: ($13) 6[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/heart.gif[/img], 2[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets $9</font>, Button calls $9, SB folds.

Turn: ($31) 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $21</font>, Button calls $21.

River: ($73) 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero bets 35?