You can't really go wrong playing a 15 out draw on the flop unless you fold it. I like to over bet the pot by a little and push over if i'm raised. These hands are scary if you don't get all the money in on the flop, and the turn doesn't improve your hand so i prefer to just try and get as much in as i can on the flop and either take down a small pot there or go into the turn/river as a slight favorite.