My first trifecta down the drain...

[Nick C]

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On the turn, I think the button thinks I have trips, so if I would just donk the river he would just often call and give me 1bb because he thinks I hit a full house, but if I checkraise the river instead he is definately going to pay off with AQ,KQ,QTs(prob. raises Q9s sometimes pf. here) and maybe even 3-bet out of spite or just believing he still has the best hand.

[/ QUOTE ]

I think I've run into some raises of this type (it's hard to know the motivation, which is why I say "I think" I've run into such raises), which is part of the reason I hesitate to take raise-fold lines, especially heads-up on the river.