1) calling a PF raise OOP with Q8?

2) donk lead flop?

3) Turn bet seems risky given that he's displayed strength preflop and likely to have an ace or better queen

4) Given that you haven't scared him out by the river, he's probably got something. Hope it's an ace and value bet river harder with yer boat if he's a station? Or if he's really aggressive try a check to induce a bluff?

I don't really know about that river. I guess I could see a weak bet inducing a bluff from a maniac who'll take that as a sign of weakness, or getting called by a station with an ace who might not call a bigger bet on that scary river without a queen.

*shrug*