[VanBeek]

In the first hand I would just call the minraise without reads, because of his low aggression factor he probably has a combodraw or a set, so you're a dog versus his range.
I doubt he ever bluffs that river, so a fold looks good.

I need to know more about your friend Bob to say anything reasonable about the second hand. Does he like to semibluff on the turn? Does he like to make extreme bluffs on scary boards? If you don't know never bet the turn and call a PSB on a non spade river (maybe even on a spade river if your guts tells you to).