Assming the money is at least $15 deep, betting here is less of a mistake since there is still lots of money behind and small pots are great places to splash a little.

On draw heavy boards OOP after betting the flop , I usually check missed draws and very strong hands (unless they're known to check behind.) Aggro/semi-aware opponents love to bet when checked to after calling the flop, so I like to exploit that. Also, kinda bad/medicore players have a lot of trouble folding to bets after putting in action already on that street.