If you really wanted to keep the pot small you can just call the raise and check-call on fourth and fifth street. But how many cards in the deck are going to hurt you, and how will you proceed when one of these cards hit? If a heart comes, do you check/fold? If the turn is a blank are you going to call another big bet?

Now that I think about it, check-calling isn't a bad line, but if he's drawing to a boat you're letting him do it for cheap and if he has a set, two pair, or a straight, then you won't get any more money from him unless you're beat.