b/f turn sounds about right. He's loose enough that he has alot of draws in his range, however Qx is likely as well - this is why I continue betting. We will still get him calling with Qx or maybe even middle pair depsite the flush card coming. I bet like 2/3 on the turn and roughly 1/2 pot on river I guess. I think you should be folding if raised on the river as well.

B/f is a great line because it will allow your villain to put money into the pot with a weaker hand, and will allow you to get away from your hand when it's likely you're beat (get raised). If you just shut down and check, he can bluff you out too easily and it makes it difficult to put him on a range of hands.

EDIT: I just realized you were in position. OOP I bet/fold but in position I'm not exactly sure whether we should check behind to induce a river bluff or not. I suppose betting the turn would be okay and if c/r'd give it up.