How do you play in these situations? Both general advice or specific examples would be welcome.

You hold suited connectors or AXs and raised PRF to get one or more callers.
Flop brings only one of your suit and nothing else to help you.
How much to bet to represent on the flop here?
You bet to represent but still get at least one caller.
Then the turn brings another of your suit to give you a flush draw before the river card.
Now what? Semi bluff or check? If you bet, how much?