Villain is unknown and hasn't been active over 15 hands. The BU is a total fish, so it's possible his range can be wider than usual preflop.

I'm happy with the hand up until the river, but thatJ pretty much improves the only hand I can expect value from if I put out a smallish blocking bet. I don't like c/c the river because all I can hope to snap off are bluffs from missed draws and I've no idea if he bluffs them here, given my range looking quite strong up until now.

I think c/f river is best.

Thoughts?

No-Limit Hold'em, $0.25 BB (6 handed) - Hold'em Manager Converter Tool from FlopTurnRiver.com

Button ($33.65)
Hero (SB) ($27.50)
BB ($25.15)
UTG ($25)
MP ($26.25)
CO ($25.25)

Preflop: Hero is SB with K, Q
3 folds, Button calls $0.25, Hero bets $1.15, BB calls $1, 1 fold

Flop: ($2.75) 5, K, 8 (2 players)
Hero bets $2.20, BB calls $2.20

Turn: ($7.15) 3 (2 players)
Hero bets $4.50, BB calls $4.50

River: ($16.15) J (2 players)
[color=#CC3333]Hero?