[iggymcfly]

I'd probably make it 1100 here. This hand looks more like a weak draw he made trips with than it does any kind of full house or pure bluff so flat-calling would be a mistake. He's usually got 7.5 to 9 outs with trips so making it 1100 gives him the wrong odds to call, and with only 1000 left in his stack, he may feel pot-committed enough on the river to make the call with AJ or if whatever draw he had on the flop gets there.