How could I get more value out of this hand?

On this hand, I think my river bet smelled like value bet or he thought i hit an open ended draw. I am pretty sure he either had a set or two pair on flop.

I thought that if i checked the river looking to check-raise, he would have checked behind. My bet must have convinced him that I had the goods or he was totally on a draw. I'd like thoughts on what sized bet you think he would have called on the river or any other way to get more value out of this hand.

PokerStars Game #18069826573: Tournament #91352474, $2.00+$0.20 Hold'em No Limit - Level I (10/20) - 2008/06/11 - 15:33:14 (ET)
Table '91352474 20' 9-max Seat #6 is the button
Seat 2: No jinx here (1490 in chips)
Seat 3: Khales (1540 in chips)
Seat 4: Zeon26 (1470 in chips)
Seat 5: bombay black (3630 in chips)
Seat 6: ninnig1 (1680 in chips)
Seat 7: Isabella7 (1460 in chips) is sitting out
Seat 8: SluggerWV (4530 in chips)
Seat 9: BAYvw (3690 in chips)
Isabella7: posts small blind 10
SluggerWV: posts big blind 20
*** HOLE CARDS ***
Dealt to SluggerWV [Jh Th]
BAYvw: calls 20
No jinx here: folds
Khales: folds
Zeon26: calls 20
bombay black: calls 20
ninnig1: calls 20
Isabella7: folds
SluggerWV: checks
*** FLOP *** [8s Qh 9c]
SluggerWV: bets 100
BAYvw: calls 100
Zeon26: folds
bombay black: calls 100
ninnig1: calls 100
*** TURN *** [8s Qh 9c] [7d]
SluggerWV: bets 200
BAYvw: raises 200 to 400
bombay black: folds
ninnig1: folds
SluggerWV: raises 640 to 1040
klem mate is connected
BAYvw: calls 640
*** RIVER *** [8s Qh 9c 7d] [6c]
SluggerWV: bets 1040
BAYvw: folds
Uncalled bet (1040) returned to SluggerWV
SluggerWV collected 2590 from pot