I have no experience at $1/2 stakes, but I'd reraise preflop to better define his holding. As played,I would think at best, he is holding AQ or a lower PP. As I said in another post, I play trips aggressively and would try to take the pot down. Get your money in with the best hand.
As it played, I'd of reraised/pushed the turn to put him all in to keep playing. Just my micro-stakes opinion...
