[GoldenIP]

I can understand c/c black 7s or 8s with no draw but I definitely don't get the turn raise unless he had a flopped straight with a set which would have been massive (and probably unlikely but not impossible).

He's probably what you think he is, a bit donkish. If he's raising that turn thinking a lone set is best, then continue playing him forever. If he had a massive hand, fair enough. I don't mind your river call given his turn line...any sane person (assuming it's not a bluff) is c/c the turn again probably with just a set.

Then, all of a sudden he's leading the river when it paired? Yeah, bad line from the villain and I don't mind the call....although for 1/2BI, it's a pretty convincing bet. Logic suggests a call is fine but heart, owing to villain retardedness, suggests a reluctant fold.