I probably call. If he has a flush I immediately have to make a note. More often than not this is a bluff from a good player but a small flush from a total donk. The way UTG+1 played this hand it does have the donk appearance. But I don't know too many donks who raise 3x like that. That's usually either 2x or a bigger raise.

I would have raised more on the flop. It was 17 to call a 40+ pot a flush draw is coming in on that. Your value/preventive bet may have backfired since some people will think that is weak on that river.

I'm sure you'll say I'm wrong and he had 93 clubs or so.