#1) $5/$10 NL at Full Tilt. Its my 1st orbit so no reads

I raise $35 with [8d]. Button calls.

Pot $85. Flop [9h][6c]. I bet $65 and he calls.
Pot $215. Turn . I bet $150 and he calls.
Pot $515. River . Flush hits. What do you do? If you check, are you calling a bet? And if so, how much? I have $700 left and he has a HUGE stack.

#2) $2/$4 at Tribeca

MP ($600) limps. I have $315 ($300 max buy in) and raise to $20 with [Jd]. BB ($250) and limper call

Pot $62. Flop [Kc][8s]. They check to me and I bet $42. BB folds. MP calls.
Pot $146. Turn . Flush hits. He checks. I check behind
Pot $146. River . He checks. Do you value bet this? What could he have that could call a value bet with...that called with that flop and didnt lead the river? If he has an ace surely, he would bet the river. If he has the flush, he could check raise the river. If he has neither, I doubt he can call a bet, right?

#3) $2/$4 NL Tribeca

MP ($285) limps. SB completes and I check in the BB with [3s].

Pot $12. Flop [5h][2d]. SB bets $8, I call. MP raises to 424. SB folds and I call.
Pot $68. Turn . I check, he bets $35. I check raise to $110 and he instacalls.
Pot $288. River . Flush hits. Pot is too big to worry about the flush and I have to push right? We both have about $145 left.

In Hand 2, I could see him having a weak ace since he limp called preflop.