(.5/1) stud/8 With trips should I have charged these lows?

[preiserone]

I like the way you played the whole thing up to the river. Checking might be a little better alternative. I just think it is to easy for one of them to hit a low straight or a flush here for you to bet.

Betting will only get you half a bet if the guy stuck in the middle calls, nothing if he folds and you split the pot, and you'll probably lose two bets if you get scooped by some 5 card high hand.