My two bluffs, need your opinion.

[Up-grey-de]

Hand 1: I´d give up on after he called the flop. But like Rollin said, if he calls you down with weak holdings a lot then I might just fire another barrel on the turn.

Hand 2: Fine. Maybe I´d bet more, like 140 or so. But the fact that the board changed makes a second barrel a good idea.