Hand 1 I bet out on that flop, sadly nobody's shown any strength so you COULD flat the turn and hope they catch up on the river but IMO that isn't worth losing the off chance that they're willing to stack off here. I'd probably make a small raise inviting draws to continue.

Hand 2 is easy shove with OESD and backdoor FD, plus a top pair that is probably no good and some 2p/trip outs that just may be good, plus superawesome pot odds.

Hand 3's been covered.