($16) Stumped on the river, ITM

[IdiotVig]

Villain has been pretty laggy all along, and is probably not the type to check a moderately strong hand (say, top pair) on the flop. What do you do on the river?

Coincidentally, how big would you have raised on the turn, if at all?



PokerStars Game #2957969609: Tournament #14597800, Hold'em No Limit - Level VIII (200/400) - 2005/11/02 - 21:08:53 (ET)
Table '14597800 1' Seat #9 is the button
Seat 1: FLUSHMENOT (7700 in chips)
Seat 5: evil2525 (1475 in chips)
Seat 9: IdiotVig (4325 in chips)
FLUSHMENOT: posts the ante 25
evil2525: posts the ante 25
IdiotVig: posts the ante 25
FLUSHMENOT: posts small blind 200
evil2525: posts big blind 400
*** HOLE CARDS ***
Dealt to IdiotVig [Qc Jh]
IdiotVig: calls 400
FLUSHMENOT: calls 200
evil2525: checks
*** FLOP *** [Ad 6d 8c]
FLUSHMENOT: checks
evil2525: checks
IdiotVig: checks
*** TURN *** [Ad 6d 8c] [Jc]
FLUSHMENOT: bets 400
evil2525: folds
IdiotVig: raises 800 to 1200
FLUSHMENOT: calls 800
*** RIVER *** [Ad 6d 8c Jc] [5h]
FLUSHMENOT: bets 1200
IdiotVig: ?