Villain is a fish, raising 30% of btns, 3betting 15%, cbetting very often, generally quite aggro and a bit of a station (although not too much showdown history). This guy has been pretty erratic, he has been overbetting/raising bigger than pot size very often, in all sorts of situations, (e.g., he sat down and first hand made it 24x preflop, he has done 6x pot river overbets, he has made huge raises of my flop cbets/leads, he has made huge 3bets pre). So far I haven't been able to do much about it as I haven't been making hands, the only time I've seen him overbet and we've gotten to showdown is the hand below:
Party Poker $200.00 No Limit Hold'em - 2 players
The Official
2+2 Hand Converter
Powered By DeucesCracked.com
BB: $168.70
Hero (BTN/SB): $201.00
Pre Flop: ($3.00) Hero is BTN/SB with Q

T
Hero raises to $6, BB calls $4
Flop: ($12.00) Q

T

J
(2 players)
BB bets $32.00,
Hero raises to $195, BB calls $130.70 all in
Turn: ($337.40) 4
(2 players - 1 is all in)
River: ($337.40) 6
(2 players - 1 is all in)
Final Pot: $337.40
BB shows J

Q

Hero shows Q

T

Hero wins $32.30
BB wins $336.40
(Rake: $-31.30)
This hand happens probably 5-10 hands later:
Party Poker $200.00 No Limit Hold'em - 2 players
The Official
2+2 Hand Converter
Powered By DeucesCracked.com
BTN/SB: $348.40
Hero (BB): $200.00
Pre Flop: ($3.00) Hero is BB with 7

2

BTN/SB calls $1, Hero checks
Flop: ($4.00) K

7

3
(2 players)
Hero bets $4.00,
BTN/SB raises to $28,
What's your line here? I have no reason to believe he can't value bet/raise thin... if you don't plan to get it in on the flop what are you doing on turn/river?