First hand, fairly standard bet, maybe push it up to $12/13 or check/raise it

On the turn the Villan is giving you the odds to call a flush draw so an easy call, however I may be inclined to check/reraise as it seems weak

On the river good value bet anywhere from $28-35 would be ok

Second hand, fold the turn, well I would. If I did decide to chase this doublebellybuster I would reraise to $20-25, $35seems a bit much, most hands would fold. I hope he didnt have 67, unlucky if he did

Third hand, more often than not this a chase/trips/55. If he had the nut flush or weak flush the villian would have played it different.

Nut Flush would have smooth called the turn, weaker flush would have reraised the flop.

I would have fired out $60-ish on the river as I guess he had a lower straight/trips or even just A of spades