nl10z river to bluff or not to bluff spot

Posted 9 years, 3 months ago

Blinds: $0.05/$0.10 (6 Players) BN: $10.15 (Hero)
SB: $10.15
BB: $5.86
UTG: $10.76
MP: $1.91
CO: $17.75

Preflop ($0.15) Hero is BN with Q J

UTG folds, MP raises to $0.35, CO calls $0.35, Hero calls $0.35, 2 folds

Flop ($1.20) 7 5 2

MP checks, CO bets $0.76, Hero calls $0.76, MP folds

Turn ($2.72) 7 5 2 T

CO bets $1.73, Hero calls $1.73

River ($6.18) 7 5 2 T 6

CO checks

check back and why?
if we should bluff which size do you think it's the proper one?