Villain is 28/20 82 hands.
I decide to float his donk since we have the gutshot and and I can bet/raise any clubs on the turn or river.
Him not betting the turn indicates to me that he has a medium strength hand and when the club comes at turn it seems like a reasonable spot to raise as a bluff as we have the K 
blocked.
Poker Stars, $0.05/$0.10 No Limit Hold'em Cash, 6 Players
Poker Tools Powered By Holdem Manager - The Ultimate Poker Software Suite.
SB: $10 (100 bb)
BB: $7.42 (74.2 bb)
UTG: $7.93 (79.3 bb)
MP: $11.95 (119.5 bb)
Hero (CO): $10.70 (107 bb)
BTN: $7.94 (79.4 bb)
Preflop: Hero is CO with K
J
2 folds, Hero raises to $0.30, 2 folds, BB calls $0.20
Flop: ($0.65) 3
A T (2 players)
BB bets $0.40, Hero calls $0.40
Turn: ($1.45) 9
(2 players)
BB checks, Hero checks
River: ($1.45) 8 (2 players)
BB bets $0.80, Hero raises to $1.60, BB folds
Results:
Spoiler
$3.05 pot ($0.14 rake)
Final Board: 3 A T 9 8
BB mucked and lost (-$1.50 net)
Hero mucked K J and won $2.91 ($1.41 net)
