Played 1 $2.20 HU NLHE SNG today, key hands and commentary

http://www.pokerhand.org/?2774020
Checking 33 behind OOP against unknown 2 hands in is standard. Easy to stack top pair hands with set against most fishy $2.20 SNG players even without bloating pot pre. Not sure I like the double barrel call on the turn, Ax thinks he' good here a lot. Hand is underrepped, makes calling more acceptable. Willing to bluff catch the river, very marginal card, but good board for opp. to bluff. I think if I call the turn I have to call the river. Inherent skill advantage probably allows me to take a small deficit early if I'm wrong.

http://www.pokerhand.org/?2774027
Preflop is standard, seems like a bad board to c-bet even when checked to (although most fishy players will lead this board if they hit), semi-bluff on the turn is a possible line, with likely tainted outs checking behind seems standard. Value bet made straight on the river if it's not a spade, check behind any pair, possibly call small ~1/2 pot bet on the river, folding wouldn't be horrible either.

http://www.pokerhand.org/?2774000
Possibly should've 3bet min-raise, I think flatting is fine though.
Flop raise, good. Turn bet, good. River call, debatable. Probably get called by 44,77,A6,A5; villain unlikely to have A3 or 3x, Qx seems unlikely. No better hands fold, not many worse hands call raise. Content with 4:1 chip lead against donkish player if I'm right. Unsure if random Ax looks me up here if I shove.

http://www.pokerhand.org/?2774064
Flop play is puke. LEAK DETECTED! Don't slowplay on drawy boards. Betting the Ace looks bluffy, not that bad, unlikely that opp. caught an Ace. River check is probably bad, worse hands probably look me up, I doubt opp. has an Ace (or would fold if he did) but would probably c/r a 4 so it's not that bad.

http://www.pokerhand.org/?2774078
Standard, but I got lucky. 20% one time, weeeeeeee.