RoTs,.. it depends on many factors,.. how many are in the hand, what was the preflop action (are you the aggressor here?), how has your play been perceived by others up to this point, are other players even good enough to recognize what your flop bet might be respresenting, or are they completely loose idiots, believing you play flops the way they do (pot bet on flop w air in an effort to steal the pot... so many rookies doing that out there, is hilarious and yet frustrating, lol).
Lots of other things to consider with this scenario. Not too sure what others are referring to when they mention the 'min-raise' preflop for info.?? I don't see that here.. maybe I'm not reading part of the thread??
So.. without any preflop info., or knowing how many are in the hand, or the texture of the board, or if your flopped 2pr. is top 2, bottom 2 or other.... hard for me to say.
If this is the situation (or along these lines and to try to give you a standard version of what I'd possibly do)... 3 in the hand, you flop bottom 2pr. w 2-fl.dr. on brd.,.. depending upon my opponents, (if I'm first to act, I will often check-raise and to probably answer your question, I will raise big enough so that it is a MISTAKE for him to be calling me on a draw).
Generally, I think you're asking what size of bet is right for the situation, not necessarily to make it so others won't stick around to draw out on you,.. but so that if they do stick around they are making a mistake in doing so. (am I reading you right here?).
I'd be apt to bet out 1.5xpot, or rr pot if someone has come in ahead of me. I've actually raised a flopped bottom 2pr. 1.5xpot on flop and was called by a member on a gutshot dr., in a buy-in tourney here (yah... I made notes, lol). So much is dependent on the other players on the table that it is difficult to say what is the right bet or not. I think the most basic thing to keep in mind is to be making a bet that if they do call and are on a dr. (esp. in mult-way pot, where the dr's are more likely) they are making a MISTAKE to make the call, given the size of bet you've made (bet to not chase them away, but to make them pay dearly if in fact they are on a dr.).
Another huge factor in choosing what, when or how to bet is the texture of the flop. Is it a dry brd.,... how has the flop possibly hit some of your opponents?