Game is live $4-8 1/2 kill, I am trying to only play 8-16 now but I was 17th on that list

All players are pretty awful unless noted.
1st hand: I have
![The Nine of Hearts [9h]](https://pofex.com/images/smilies/9h.gif)
![The Nine of Diamonds [9d]](https://pofex.com/images/smilies/9d.gif)
UTG straddles to $8



Flop (4 players, $54 pot)
![The Queen of Clubs [Qc]](https://pofex.com/images/smilies/Qc.gif)
![The Nine of Spades [9s]](https://pofex.com/images/smilies/9s.gif)
![The Two of Diamonds [2d]](https://pofex.com/images/smilies/2d.gif)
UTG bets, I call, CO and button call.
Turn:
![The Four of Diamonds [4d]](https://pofex.com/images/smilies/4d.gif)
UTG bets, I????
Do I raise now or the river?
2nd hand: I have
![The King of Spades [Ks]](https://pofex.com/images/smilies/Ks.gif)
![The King of Clubs [Kc]](https://pofex.com/images/smilies/Kc.gif)
Semi-tight passive old rock limps UTG, CO (good player) calls, button call, SB folds, I raise to $8, UTG now three-bets, CO calls, button folds, I call.
Flop: (3 payers, $42)
![The Jack of Clubs [Jc]](https://pofex.com/images/smilies/Jc.gif)
![The Ten of Diamonds [Td]](https://pofex.com/images/smilies/Td.gif)
![The Two of Spades [2s]](https://pofex.com/images/smilies/2s.gif)
I check, UTG bets, CO calls, I check-raise to get CO out, UTG now three-bets, CO folds, I call.
Turn (heads-up):
![The Jack of Spades [Js]](https://pofex.com/images/smilies/Js.gif)
I ??????????
Do I lead and fold to a raise, call down the UTG rock, or do I check -fold?
Can I get away from this before showdown?