[spydog]

Hand 1: I don't know. I think I call. There is too good a chance that you get 3-bet if you raise and then you can't be sure if you are being 3-bet by a Ten or by a flush, so you almost have to call because you might have outs either way and the pot is big. So, you might end up putting 4 bets into this pot with a loser. Yeah, call and hope nobody checkraises.

Hand 2: I check the flop. This isn't the best place to semi-bluff with a gutshot because there are 2 broadways, 2 straight cards, and 2 flush cards. Too many reasons for someone to call. Plus, your pair outs are undercards. With 97o I would prefer to semibluff on flops like Q65 or T62.

Hand 3: I think you can bet-fold the river, but checking behind is OK, too.