[Fianchetto]

Hand 1: Seems like you are in a perfect spot to checkraise the flop here, that is what I would normally do. With you leading into UTG, he may raise and you could lose the other players on a hand where you'd like some action. You did get to 3-bet the flop though, so it worked out. I probably bet the river too. A turn checkraise seems overly fancy, and you'd hate to see it checked through.

Hand 2: I probably just give it up on the turn, even second pair beats you here. I think raising is second best, and obviously calling is worst. He leads into 4 people on the turn, he probably has a king with no kicker, or he made two pair, either way you're getting called.