[bobhalford]

Hand 1:
I would have 3-bet the river just cause AK or Ax is such a likely hand and your flush is hidden. He might even cap it with AK/AQ who knows.

Hand 2:
Looks like he loves his hand. After the flop I check/call turn and river cause it looks like we are beat. 99/KK/AA here more often than any hand we beat.

Hand 3:
Here I fold preflop just cause an UTG raise is pretty strong and I just don't know how to play the hand without a good read on UTG. Maybe this is wrong due to your flush possibilities, but there aren't many players in the hand so you won't make much when you hit. Anyways, as you played it, what else can you do? You flopped an open ended and a backdoor flush. Call the turn and fold the river cause you busted. Standard I think.

Hand 4:
Yeah I think that's too weak. Call his raise on the turn and call a river bet UI. Your hand has showdown value and BB might just be fooling around with some straight draw hoping all you have are missed overcards. Or he could believe the same thing and have a hand that you beat.