AKs unimproved on turn.....check or fire a second Shell?

Party Poker
No Limit Holdem Ring game
Blinds: $0.10/$0.25
10 players
Converter

Stack sizes:
UTG: $24.55
UTG+1: $6.96
UTG+2: $24.75
MP1: $19.97
Hero: $45.07
MP3: $28.55
CO: $42.25
Button: $32.60
SB: $11.90
BB: $24

Read on villain was somewhat of a maniac.So far only 40 hands or so,only 3 knowns-JJ,77, and Q9o.

Pre-flop: (10 players) Hero is MP2 with :kd :ad
2 folds, UTG+2 calls $0.25, MP1 calls $0.25, Hero raises to $1.25, 6 folds, MP1 calls $1.

Big Slick suited with position.Not too bad.

Flop: :6h :qh :6s ($3.1, 2 players)
MP1 checks, Hero bets $2, MP1 calls $2.

Dangerous board with the flush draw and pair;I wouldn't put villain past A6s or Axs for a hand.I bet out being that I have position and check on the flop vs a maniac is inviting a turn bluff.

Turn: :8c ($7.1, 2 players)
MP1 checks, Hero checks.

I decide to check for a free card.Turn hasn't helped me and if I am behind I may catch up on the river presuming he doesn't hold trips(I am ruling out a boat as I would expect the worst of maniacs to at least bet the turn fearing a fold on the river if the turn is checked.

River: :jc ($7.1, 2 players)
MP1 bets $3, Hero folds.
Uncalled bets: $3 returned to MP1.

So basically I can only beat a bluff at this point.Question is whether or not villain is betting a busted draw or a pair.$3 into a $7 pot so $3 to win $10 gives slightly better than 3-to-1 odds.So if I am good 33% of the time verse a bluff I break even.

Results:
Final pot: $7.1

Thoughts?Anyone bet the turn or was this played ok?

how much would u bet on the flop if u had QQ?

preflop: fine.

flop: fine. board isn't dangerous though. Q66 2 tone board is far from dangerous if you ask me. I'd generally feel good holding a hand like AQ here.

turn: fine. You havn't put a whole lot into the pot and you don't have a hand. see if you can check this down with possibly the best hand. hope for a river K/A. if it doesn't hit, I check behind, maybe call a min-bet if I don't connect. If you do and he checks to you again, I think you can get in a pretty thin value bet.

river: fine. I don't think you are good enough here to call this bet.