NL 10 - Extracting value from a speculative hand

[centja1]

Villain in this hand was running at about 83/15/1 over 120 hands at this point. Several times in the last 30 hands or so, I had open-raised his blind, both with speculative and legitimate hands, and taken it down on the flop with a c-bet.

What is your default line for extracting value here? I don't want to sound like my hand is marginal, but I'm not sure that i can call this a monster because his donk bet on the flop is what threw me a little bit. He was such a big fan of the check-call up until now.

Full Tilt Poker - No Limit Hold'em Cash Game - $0.05/$0.10 Blinds - 5 Players - (LegoPoker HH Converter)

SB: $9.75
<font color="black">BB: $20.20</font>
UTG: $8.90
<font color="black">Hero (CO): $15.35</font>
BTN: $5.70

<font color="black">Preflop:</font> Hero is dealt 6[img]/images/graemlins/spade.gif[/img] 3[img]/images/graemlins/spade.gif[/img] (5 Players)
UTG folds, <font color="red">Hero raises to $0.35</font>, 2 folds, BB calls $0.25

<font color="black">Flop:</font> ($0.75) K[img]/images/graemlins/diamond.gif[/img] 6[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/diamond.gif[/img] (2 Players)
<font color="red">BB bets $0.75</font>, Hero ???