villain is bad 34-5 over 200 hands and calls a lot of cbets with all sorts of draws and pairs, but doesn't showdown much. River check behind too weak? bet-fold

Comments on flop and turn bet-sizing also appreciated, they are way too small given stack-sizes and read I think. Pot-pot better?

Full Tilt No-Limit Hold'em, $1.00 BB (9 handed) - Full-Tilt Converter Tool from FlopTurnRiver.com

BB ($55.60)
UTG ($121.15)
UTG+1 ($73.60)
MP1 ($222.70)
Hero (MP3) ($194.50)
CO ($103.80)
Button ($76.10)
SB ($95.50)

Preflop: Hero is MP3 with 8, 8
UTG bets $4, 1 fold, MP1 calls $4, Hero calls $4, 4 folds

Flop: ($13.50) 8, A, 6 (3 players)
UTG checks, MP1 checks, Hero bets $8, 1 fold, MP1 calls $8

Turn: ($29.50) 3 (2 players)
MP1 checks, Hero bets $23, MP1 calls $23

River: ($75.50) 9 (2 players)
MP1 checks, how nit am i?