Bet the turn stronger. You're not going to be able to telegraph much weakness against that board. If the turn came an ace or paired the board (some card that the opponent would think you're scared of), the weak lead would be a better move.

River, checking behind to the scare card is an option. However, betting becuase trip 5s might think they've taken it is another. He could still be playing a 5 since you never put him to a difficult decision to fold his 5. Is he capable of still holding a 5?

I would have rather seen more money go in on the turn.

-'rilla