[Andy B]

I actually think raising fourth is a decent play. You should flush out the Jack. If the Ace has a busted low, you're in good shape. If he has Aces, you can always draw out, and at least you're playing for the whole pot. Against a good player, you might be able to buy the pot on fifth if you catch another straight or small flush card.

On fifth, part of me was trying to keep the Jack in, and part of me was afraid I was behind. Not sure what I would have done if I hadn't filled.